The High Definition DVR technological science is so unbelievable as it has give movies and television shows a brand new fresh appearance. But, there is still one small problem: much of the stuff that's on television is still awful! A stupid sit-com will insult your intelligence in high definition just as easily as it will in standard def, if not more and this is where DVRs come in.
The DVR is the short form of digital VCR which is also called a personal VCR or PVR which essentially is same as a Video Cassette Recorder, which records content from a television program. The DVR is however capable of doing much more than the old VCR, in the sense that it makes TV viewing more crisp where you do not have to waste time watching trash. Plus it is always recording what you are viewing, so you'll be able to pause a live transmission as if it were a recording, then come back to it later without missing a thing.
The general models are available from way back in 1999 but the latest models are prepared to handle high def materials. The technical storage is impressive, the High Definition DVR is run by a hard drive, which holds more than your desktop computer and can store thirty five hours of high def content or three hundred hours of standard material. of course the new models have improved in other areas, too - for example the TiVo Series 3, for instance, can up scale standard definition content to give it better quality, and can record 2 channels simultaneously while you watch a third.
The shortest and simplest way to obtain a High Definition DVR is to take one on rent from the cable company, by paying six to ten dollars per month as rentals, but users usually are not too happy with the shortened memory storage (eight to ten hours of high def content) as well as the difficulty in handling the accompanying hardware. The most feasible answer to this problem is to buy a TiVo Series 3 HD-DVR, which right now costs about $500 but you would be amazed at its quality of transmission, storage storage and comfort of use.
The positive effects of using this type of recording device are huge. This device can be set to record all the programs where you have a special interest even if you do not know that these are broadcast - for example, program your TiVo to record all movies starring Keanu Reeves whenever it is shown on any channel. You no longer have to surf through the endless channels for equally endless hours and the best part is that you could view your favorite shows without the both of commercials, and this itself is such a smart way to watch TV.
The affect is so great that nearly 70% of television advertisers confirmed in a recent study that with High Definition DVR encroachment in the market, the thirty second spots would become defunct. This also included a comment by one one-quarter of advertisers who said that they would reduce their Television advertising budget and use it in some other avenue. With a Blu-Ray DVD player and an HD-DVR connected to your HDTV, you can finally fight the good fight against the tyranny of mindless television ads.
For more great information on High Definition DVRs, HD-TVs, and more click on one of the links in the article.
Admittedly, appearance should be one of the last factors considered by prospective camera buyers but there is no doubt that the Canon 870 is a fairly attractive piece of technical equipment. Also available is the "gold" finished version, which looks almost like a piece of jewellery. Size wise it's about the same as a packet of poker cards and that means it can fit into a handbag or pocket.
The Canon Ixus 870 is more than just a good looking digital camera, it packs serious photographic technology. The lens is the equivalent of a 28 millimetre-112 millimetre, which provides a much wider angle of view than most of its competitors. No longer is Canon's image-stabilisation technology only available in high-end models. Now also a feature of the Canon Ixus 870 IS, his means that with a bit of effort you can produce acceptably sharp images without a tripod down to about 1/25 of a second.
Also available in the Canon 870 is automatic face detection. This works nicely and usually appears able to detect a face even in part-profile. A face self-timer function, although a bit gimmicky waits until you join the group before taking the photo. It has 19 scene modes as well as a handy macro setting and a 30fps VGA movie mode.
Boasting Canon's DIGIC 4 processing technology, the Canon 870 provides less noise at the top end of ISO settings though at 1600 there is still a lot of noise but still not bad for this class of camera.
Also, the Canon 870 features a 28mm wide-angle lens allowing for great photos of picturesque landscapes and delightful group photos. Viewing your favorite photos has never been so good with the awesome 3.0 inch PureColor LCD screen.
It's not a "serious" Canon Digital camera in the usual sense and no one is going to mistake the Canon 870 for one. There is no manual mode and no optical viewfinder for example. But no biggie if all you want are fabulous photos, then this camera won't disappoint.
CNC Programming is one of the most effective ways that people are using today in order to cut metal and do other processes in manufacturing. Many hobbyists are using CNC programming to produce woodworking, metals and foam objects. With the help of a CNC, we can easily produce or manufacture parts in a short time.
CNC stands for computer numerical control and is basically the use of a computer to do certain types of operations. And this type of process is usually used to router, lathe, laser machines and foam cutters - and the same process can be used for mini versions of these machines.
Actually, there are two main categories in which the CNC program will be placed, a continuous path positioning category or a point to point category. It is not a surprise if a computer executes both of these two types of programming, because it can be done with a sophisticated software program. In order to run the machine properly, the operator has to understand both of these processes completely.
And now I will present you with the explantaion of the categories stated above:
Point to point positioning - this category is mostly used when drilling, boring, punching or tapping is needed. This is a process used to position from one point to another when the machine process is being done. To tell it more directly, it will go from one position to another, no matter how many are there, and it will keep working until the complete process is finished.
To use contouring, we need continuous path positioning which is present in case we work with a lathe or a milling machine at the moment. And this is simply another name that is used for the category. To explain this a bit better, a piece will be completed fully by the cutting tool that will go from one point to another in a continuous motion. This means that the operator has to be able to program the machine so that it continues on several axes at a time and simultaneously.
Any individual will be more successful at its work if it understands both processes.
If you want to build your own CNC Machine you are lucky because there are plenty of websites out there today that you can get tons of information from. The only thing you will have to decide is what type of CNC machine you want to make.
You can start by thinking about what you want the machine to do. As an example, you can build a small or large machine, it can do milling, routing, cutting or lathing, you can build it for a variety of different materials and you can use it for developing just about anything.
Most do it yourself information gives you pictures and step by step instructions as to how to start and complete your DIY CNC machine. Although many people want to build a CNC machine from the bottom up you also have the option of using kits or modifying a regular machine you have to the CNC. As an example, you may have a lathe machine that you want to convert to CNC and all you will need to do is make a few extra steps.
Parts for making your own CNC DIY machine are readily available from a variety of manufacturers. You also can find parts that are from other things. As an example, if you are building a milling machine you can use the motor from an old dot matrix computer if you can find it. You can scavenge parts from a lot of different places in order to make a functional CNC machine.
Also, there are blogs, forums and other information geared specifically toward the individual who wants to build their CNC machine. If you are a more hands on learner there are also a variety of videos that show you how to create a DIY CNC machine.
In order to build your own CNC you will need to acquire the components that are right for your machine. As an example, the parts you need to build a milling machine will be different than those to build a foam cutter. So, you will want to know which type of machine you want to build before you begin.
The person who builds their own machine needs to know about circuitry, computers, programs and how to put machines together. If you have already had some experience with working wtih CNC Machines all of this information may be something that you actually already know.
Many DIYers are people who are hobbyist. If you look around on some of the CNC Websites you may be able to find someone who will seel you their plans or give you free plans with pictures and step by step instructions. Usually the cost of the plans is under $40 and this includes detailed pictures.
Really your imagination is the only thing that is going to limit what type of CNC Machine you can build. Most people concentrate on milling machines and router tables but you can also find plans for plasma cutters, foam cutters and lathes all with CNC adaptations. If you are a hobbyist you may consider the mini CNC machine because it is small enough to fit on a workbench or table top and runs through the use of your PC.
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A CNC Machinist also known as a CNC operator is the individual who is able to run the CNC machine. They are involved with the understanding of the process of their type of machining and are capable of looking at blueprints of the drawings of parts to be created and setting the machine up in order to produce the part.
A CNC machinist must understand various software programs including CAD and CAM and understand the intricacies of the CNC machine they are in charge of operating. The person who works in a certain industry could really know just about all of the types of machining such as cutting, drilling, and milling.
There are several skills that a CNC machinist must have which include:
§ They must be a problem solver to be able to troubleshoot the machine if something goes wrong. Its important that these are people who can understand teh capabilities and limits of the CNC Machine. § They must understand the CNC process and how it works overall with the machining type they need to produce. § They have to be able to identify and use various codes. § They must be able to identify, locate and use various tools that they may need to load on their machine. § They should also have mechanical aptitude in working with a variety of machines.
Some CNC Machinist are also capable of programming machines but the job could require a separate person to do the programming. If they are a programmer they would also understand how to organize and plan, would be able to read blueprints and have strong math skills.
Another type of Machinist actually does both operating and programming. This individual may have a background in Tool and Dye making or Mold Making or they may be a General Machinist. In this case they would have an extensive background in programming with CNC and machining and planning; the other requirement is that they would have entered into an apprenticeship to learn these skills that would have lasted three to four years, which means that some of their training would have been on the job.
As Machinist continue working with CNC machines they must continually keep up their skills by taking new training so that they can edit CNC programs where necessary. Upgrades for software are always going to occur no matter if you want them to or not so operators need to be able to adapt to the new software upgrades.
Most CNC machinists have some education but it is usually in the way of a certificate or an apprenticeship program. Since this is a trade, they are able to get experience on the job in some situations. This could be through an apprenticeship or through an entry level position at a company.
Because a CNC machinist is able to do so many things they are generally compensated well. The average salary for a CNC machinist who generalizes is $14.37 to $23.08 an hour. An inexperienced CNC machinist will earn less than one who has lots of experience.
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Japanese Sharp Corporation releases a press statement on 27 August 2008 that did not grab any headlines. But one day, it may be on Page One of every newspaper on earth! Incorporated in its ionic air purifier, the Plasmacluster Ion Technology (more on this in a later post) has just been scientifically proven to be 99.9% effective in destroying the bird flu virus known as H5N1.
Every now and then, the press reminds us that bird flu is the prime suspect to cause mankind's next pandemic. Pandemic sounds terrifying. It is. That’s when a highly contagious virus goes global, in a very negative sense. In 1918, an invisible bug is believed to have wiped out 50 million people during the Spanish Flu pandemic! That was blamed on the H1N1 virus which was only recently confirmed on 5 October 2005 by the World Health Organization (WHO) to be a bird flu virus.
Now that I have your attention, is it time to PANIC?
Not just yet. "Only" 245 people infected by the H5N1 virus, as per WHO data as at 10 Sep 2008, have died since 1996 when it first surfaced in China. So what’s the fuss? A bird flu virus that attains human-to-human transmission capability is the ultimate horror of the scientific community. As of now, there has been only one probable case of human-to-human transmission recorded in Thailand in September 2004. Without a doubt, there will be global pandemonium if the dreaded virus mutation happens.
Quietly but conscientiously, many countries are preparing for the worse (more on this in a later post). At the individual level, we should start making preparations too.
Ok, so what’s all this got to do with Sharp’s ionic air purifier. Isn’t it just another ionic air purifier? It is ordinary in that it performs the usual functions of the run-of-the-mill air purifier by getting rid of dust, dirt, smoke, dander, pollen, cuisine and pet odours, pollutants, allergens etc. But if we can get protection from all these and more in one ionic air purifier, especially one that is a tested defense shield against a potentially deadly virus, why not? And that is precisely what Sharp is telling us; get the whole package with their Plasmacluster Ion Technology.
The next obvious question for the value-conscious, would be “yes, that makes a whole lot of sense but at what cost”? Here again, Sharp claims that it's at no extra cost! Sharp contends that it is cheaper than any other ordinary ionic air purifier when measured over 5 years. Now, that’s value for money! But, how is this possible in this nothing-is-for-free world?
With the Plasmacluster Ionic Air Purifier Model FP-N40CX as the basis, Sharp contends that it is great value for money as there is no filter replacement costs for the first 5 years. At US$399, the Sharp model compares favourably against a typical competitor's ionic air purifier that may cost US$160 upfront but over 5 years cost a total of US$560 due to annual filter replacement costs of US$100 each.
Any feedback on the competitor numbers would be greatly appreciated. Do let me know if you have recent actual data.
In the meantime, I will study the Sharp Plasmacluster Ion Technology more closely. Especially since bird flu is still not quite at pandemic proportions.
Join me in my quest. Experience is a good teacher. I remember my family, along with thousands of other frantic people, scrambling around town looking for the much-touted N95 face mask when the last near-pandemic scare took place in Asia. In case you have not heard, the year was 2003. The SARS (severe acute respiratory syndrome) virus originated in Asia and infected 8,096 people around the world, resulting in 774 fatalities. Being well prepared is half the battle won.
Watch this space as we track exciting developments in our pursuit of safe, pure and clean air with nothing more than an ionic air purifier.
CNC Programming is one of the most effective ways that people are using today in order to cut metal and do other processes in manufacturing. There are a variety of different CNC Hobbyist that are using CNC Programming today to make metal, foam, or wood objects. CNC has created a way for many people to manufacture or fabricate parts quickly and effortlessly.
CNC stands for computer numerical control and is basically the use of a computer to do certain types of operations. This is a process that can be applied to lathe, router, foam cutters and laser machines; it can also be applied to mini versions of these types of machines.
There are basically two types of categories that G Code Programming will fall into point to point positioning or continuous path positioning. Usually a computer can execute both types of programming depending on the sophistication of the software program being used. This means that the operator must understand both processes in order to run the machine.
Here is a simple explanation of these two categories:
Point to point positioning -- this category is mostly used when drilling, boring, punching or tapping is needed. This is a process used to position from one point to another when the machine process is being done. The program will work going to as many positions as it needs to in order to get the process finished whether that is from the X to the Y position or not.
Continuous path positioning -- this category is generally used when a lathe or milling machine is being used and is used for contouring (contouring is another name for this category). This means that the cutting tool moves in a continuous motion from one point to another until the piece is completed. This means that the operator has to be able to program the machine so that it continues on several axes at a time and simultaneously.
Continuous path positioning also uses a series of processes called interpolation which is the way in which the machine is programmed to go. Interpolation can be helical, parabolic, cubic, circular and more. The basic function of this interpolation is to keep the programmed information stored and to monitor and direct the axes in how it should go.
What needs to happen first before any programming can start is that we are going to need a finalized design of the basic drawing of what the computer is going to make. This must be studied to make sure that the operator understands the intricacies of the drawing so they can translate the information into the computer software they are using.
This means that the operator must be skilled enough to understand how the paper drawing will translate to the computer, and then be able to program this information into the computer so that the machine will perform the cuts or the processes accordingly.
When you think about this process, it is a good idea to think about what you would do if you were producing the work manually because anything you would do manually, you will depend on the machine to do automatically. By understanding G Code Programming the individual will be more successful.
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CNC Machining refers to any process that uses a CNC machine. This could be for routing, milling, drilling, or other types of work that is done with metal, wood or other materials. This is a manufacturing process that uses the automatic opportunity from the computer to create shapes or forms that must be precise.
Raw materials are used and they are put into a CNC machine that uses cutting tools to make these shapes. The CNC machining process involves computers that have at least one microprocessor and several units for storage. With CAD or CAM software systems added to CNC the computer can be programmed to produce the precise movements that are able to create the part.
In CNC machining the process is automated which saves the operator time and saves the business money. The operator is able to load the materials, program the machine and then the machine can work without attention when set up properly; the amount of time it is run without attention is also programmed in.
An important aspect of any CNC Machining is for the operator to know the machine well. CNC is an addition to the general aspects of the machine. As an example, if you are doing routing, adding CNC to the process only automates it. However, for the operator, it means that they must understand the machine, how to put in codes or use CAD or CAM and how to operate the machine; they must also understand how basic routing works.
Another area that is important in order to understand Machining is the basic components of the machine. Like anything around the house that you need working you need to have these machines operate at all times which means you really need to know how they operate in order to be able to fix them if something goes wrong. You will need this so the operator can really udnerstand the capabilities and limitations of the machine so he or she can get the most out of it.
As CNC machining becomes a project the operator is in charge defining five areas. They will first think about the project they want to design and plan it out. This is where sitting down and drawing out plans will be a good idea.
The next area is to understand CAD to translate the drawing into the computer and then an understanding of CAM to translate the CAD information into machine language. In the final area the individual must understand the Controlling function in order to make the machine do what is required. When all these areas are fulfilled properly they allow the individual to create the project in the way they saw it in their drawing.
CNC machining was traditionally only done in commercial settings with very large CNC machines. Today, there are mini-CNC machines that allow the process to be done on a smaller scale in a home workshop. Before the smaller business really had a rought time building parts and products on a smaller scale but now this technology has allowed smaller businesses to be able to do this.
CNC machining can produce both simple and complex designs and can be used on a variety of materials including aluminum, foam, wood and other metals.
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No matter if you have taken all the required precautions, when a server or a hard drive fails you can guarantee that the search for a company to sort out the problem will be the foremost thing on most peoples minds, but how do you choose the best comapny to do the job for you?
Making the right choice in which data recovery company to work with can be a bit of a chore at an often crucial time, but getting it right is vitally important to ensure the best success rate.
The company that gets your vote should have dedicated Data recovery staff that are professionally trained for the required task
Data recovery and file restoration should be the main focus of their day to day activities and not a task that they undertake every once in a while when they get a job in.
A true data recovery lab will be able to successfully recover data from Servers, Laptop’s, Desktop’s, CD/DVD’s and all other types of storage media, not simply just from a failed hard drive
Top tier data recovery companies will be at the cutting edge and will be carrying out their own research and developments Changes to hard drive specifications or new tools are often unavailable so companies need to self develop.
If they are leaders in data solutions they should also be able to offer a full gamut of data recovery services including full server and raid recovery capabilities. If the company are an industry leader they will also offer a call out service as this is often a key requirement for server and raid data recovery.
Frighteningly some companies will only have a basic workbench to recover your data, you want to ensure at the very least they have a certified (preferably certified to ISO class 3 standards) clean room.
If the recovery company need to strip your drive to effect a repair you need to get the data back as quick as possible in most cases so if the company do not have their own lab you may find your drive will need to be shipped abroad.
In summary your data has a huge value both on a personal and business basis so don’t rush in and make sure you ask the right questions to give you the best chance of getting your data back.
If you are a small business owner then chances are at least once you have thought about what would happen if you loss all your data. The fact is most small companies do nothing to backup their data. If you were to loose your data today would you be able to recover from such a loss. Many companies go out of business for such a simple but costly mistake.
We found a great guide on this small business backup software page. The article is simple and blunt. Basically this article gives you great options and tips on how to backup your data and what the cheaper and simplest methods are. Don’t get caught losing your data now that you know better.
Data backup solutions are not just for people that own a business.No computer user should be without a data backup solution. When selecting a client to backup your data you don’t just want one that will backup your personal and business files. You need a solution that will backup your entire computer using an image. That way if your hard drive fails you can use the backup to get your computer fully back to what it used to look like. This way you still have all your custom settings and software. Saving time reloading software is worth the cost. Once again we will refer you over to this small business backup solutions page. Don’t worry the cost is very low considering what you are getting in return.
You should also consider getting software to protect your computer online as well. Many people think that just because they only go to safe sites that they are free from viruses. While we normally don’t recommend products you should check out this Vista spyware guide that talks about solutions to help protect your computer and remove any threats found. While the site above is dedicated to Vista it also applies to XP.
CNC Control Software is what any CNC machine uses to create the operations within the machine. Generally it is considered to be the "intelligence" that governs the type of operation performance or the overall capacities of the machine. The software will be how the machine designs, cuts and operates the work that the operator programs into the computer.
CNC Software also uses electronic memory modules where information is automatically stored inside the CNC machine. In some case this information cannot be changed and in others, through the use of temporary memory, it can be changed.
Generally speaking the computer is very important to the process of the CNC software because the computer numerical controls are usually outside the machine on a small or large keyboard. The computer is offline when it is performing the programming of parts and the computer controls the other parts that are necessary to create the product, depending on the type of CNC in use.
There are four basic software types that CNC uses:
Manual G Code Programming Many of the larger commercial machines use and it is used for simple machine processes. The drawbacks of this type is that it takes a long time for someone to learn how to program G Codes and if you want to use more complicated machines, it is time consuming to learn how to use it. Because if these issues, many operators would rather not learn how to do this and
Offline CAM Programming This type of programming can be done using a local PC and generally is available for larger machines as well as some of the smaller desktop CNC machines. Its important to realize that you can't use this software without a computer that is attached to the machine. This software can be a bit more troublesome for others to learn and is quite complicated so its good to take this into consideration.
Conversational Programming This type of programming is a better type of software program for the use of CNC because it is intuitive, which means it is simple to learn by the average computer person and it is similar to the programming in regular PCs. The reason this type was developed was so that it could do both simple and complex parts without having to take so long to learn.
Windows Based Programming Many CNC Control Software programs are now Windows based which means it works through Windows XP or Windows VISTA. The operator can import CAM and CAD programs and it can import other types of software like dxf files depending on the type of machine being used.
Today all CNC programs go by a variety of names including MSHAK-CNC, ProtoTRAK or TRAK, and OpenCNC all with their unique way of approaching a CNC system.
Also the purpose of each software program is to make life easier for the operator and make the machine do what is required. The easier the software is for the operator to program, the more the machine will be used. The particular software has also been used with CAD and CAM systems which makes this easier for many operators.
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A mini CNC lathe is generally converted from a regular lathe when a hobbyist wants to experience a machine that can do twice the work they can do manually. Usually these are small machines that have a lot of power but that can sit on a desktop or workbench in the home.
Sometimes a nice way into a new hobby is to take a smaller chunk of that hobby that this is what you can do with a CNC Mini Lathe. The CNC mini lathes are good for metalworking in general and for making small parts that need to be made with precision. Generally speaking the individual starts with a CNC Mini Lathe that they buy and then convert it to do CNC.
Most mini-lathes are a smaller version of those used in commercial shops but they can be a different design than those that are made strictly for working with wood. The mini-lathe is able to shape plastics, woods and other materials. A nice feature of these is that manufacturers are continuously developing new features so it has become easier to convert them to CNC over the years.
Mini lathes usually come in three sizes: 7x10, 7x12 and 7x14. Each one is measured by the length that length of the swing as it goes over the bed of the lathe. Today you can also find 9x models. The conversion of a general mini-lathe to include CNC has many benefits.
Many plans that you can find on the Internet will allow both manual and CNC abilities in the conversion because there are times when an individual is working with the machine that they may elect to do some processes by hand. At other times they may want to use CNC capabilities to produce repetitive pieces or ones that require a lot of time manually.
Converting to CNC also allows you to be able to produce both 2D and 3D contours which are unavailable when you are only working a CNC Mini Machine by hand. All you have to do is program the computer to create the part you need. You can use wood plastic or metal to make a mold and using the CNC portion you can produce a mold that you can use as many times as you want because it creates a perfect mold. You can do multiple holes drilling by creating the diameter of the whole and then programming it into the computer; from that point the CNC lathe does the work.
When converting to CNC Mini Lathe it will generally take one or two weekends to finish the conversion; however plans will vary depending on what you want your CNC mini-lathe to do. For under one hundred dollars you will find that you can get some pretty nice plans with step by step directions and really good pictures.
To convert to CNC you will need to understand either CAD or CAM software because currently these are the types of software that is used in the CNC mini-lathe machines. Usually you can control the lathe right from your PC because the software is created to run in that way. Generally it seems that you can make this conversion for under $2000.
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The CNC Mini Mill is actually a smaller CNC mill that has been adapted for the use of hobbyists. What is nice about this machine is that it is much smaller and can fit into a lot of home worshops easier and perfect for DIY CNCers. Some people have been able to take a basic small mill machine and turn it into a CNC machine by adding the computer control panel; this is called a CNC conversion.
This machine is also called a table top CNC mill. The mini-mill also allows an individual who doesn't have a lot of space to work within a chance to do so because they don't take up as much space as the larger CNC mill.
CNC has been used in commercial shops over the last ten years or so because of their convenience and ability to allow the operator to get more work done. For hobbyists, the prices have come down and there are more opportunities for the hobbyist to use these machines; many already understand CNC from their jobs so it is easy to convert a smaller machine.
Sometimes with machines the smaller they get the less production intent you get out of them but this is not the case with CNC Mini Machines. CNC Mini Machines really shine when they are used to cut things like Aluminum or when they are used for some finishing work. They also can cut steel because of the low-end torque they use.
Manufacturers like Haas and Syil make reliable CNC Mini Lathe that fit on a desktop but have high capacity for work. These are usually bought as regular mills and then converted through the use of a kit into the CNC mill. Alot of times if you look into it, you will find that you can covert these types a mills with a little work and quick and easy. Some conversion kits can show how to set up robotics as well.
The conversion process is much more cost effective according to those who have done it, than purchasing one out right. If you take a little bit of time to look into the costs of things you may find a new CNC Mini machine can cost more than $2,000 dollars and a conversion kit could cost well under one thousand dollars.
There are many advantages for hobbyists to use computerized programs for milling at home. Some of these include:
§ They can work more materials like soft waxes and hard steels and this allows them to experiment with materials they may not have used when they had to mill it by hand. They can also produce parts much faster than with regular milling machines.
§ This process allows them to work with more intricate patterns and produce higher precision components. What this does is that you can have more ideas that actually go into production.
§ The small CNC Mini Machine can create smoother finishes on their projects and make for a better design.
There are a variety of projects that can be done with a CNC mini mill and may are being produced by a company called Sherline Products. On their website they show many projects from a mini-steam engine to a small hobby church that people can actually duplicate. These are some of the ways that a CNC mini-mill can be used. These projects can be seen by going to their website at http://sherline.com/CNCproj.htm.
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A CNC Foam cutter is a machine that cuts blocks of foam into a variety of different shapes and sizes through the use of a computer that fully automates the process. This sometimes is referred to as a hot wire foam cutter because a hot wire is used to make the cut in a block of foam.
Usually the wire is made from stainless steel, nichrome and the wire can be very thick. What is unique about this process is that the wire never touches the foam because it is heated up very hot so the foam vaporizes before the wire can touch it. A variety of shapes and sizes as well as smoother cuts are a result of using this process.
Depending on the length of the wire, the process will cut a shallow or deep cut. The wires have to be held in the machine under a very tight tension to keep the wire from sagging when making the cut. On many CNC Foam Cutter machines this wire is held vertically so that it doesn’t create the problem with sagging.
These shapes are cut by the cutting wire that is attached to the machine. They will cut either polystyrene or polyurethane blocks. The types of foam that a CNC foam cutter can cut include anything that is thermofusible and expanded. What this basically means is that the foam has to be able to melt at one of the lower temperatures. Some of them include:
§ Polystyrene -- these are blocks of balls that are expanded. § Polystyrene -- this is extruded foam and comes in a variety of colors that include green, pink, purple or gray and these are usually plates that are smooth. § Polymethacrylimide -- a very expensive material and it is rigid foam with a low density. § Polypropylene -- which is flexible and expanded and can be a solution to protection from shock. Polyethylene -- If you want a foam that is very flexible but is extremely tough to tear, then this is your foam.
With the CNC Foam you can form a more prism like or tapered shape in the block of foam. A hot-wire that is under a high tension to cut the foam. There are two different types of components one is called a race that controls the tensin of the wire and the other are the stepper motors that work on precision and accuracy.
Some CNC foam cutters also offer different attachments like a lathe and this allows the machine to use either preformed or stretched wire. Also the machine is able to cut a variety of shapes including spirals or blocks of ornamental structure like balusters for stairways or planters.
There are a variety of uses for foam cutters that include making signage, model airplanes, protyping, lost foam cutting and more. The CNC Foam is a flexible machine and is only limited by the imagination. Although many people prefer to purchase a CNC foam cutter there are also plans on the Internet that show how to make them inexpensively for hobbyists and others who are interested in working with foam.
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The CNC Plasma Cutter process has been in existence for over 50 years and was created during World War II. At that time the government needed a welding process that would weld together aircraft parts in a better way than what they were using. This process used inert gas that acted as a barrier to protect an electric arc that stopped oxidation from forming on the weld.
As this process was improved over time, people experimented with the openings in the arc to see how they could create the best way for the process to be done. Further along the process you could tell that if you restricted the opening where the gas passed through you could get a much hotter flame. On the other hand, if the opening was made smaller, they could also speed up the flow.
The plasma-arc cutting process which is what came out of all of these experiements, became used in the commercial industry in the early 1960s. However, it was a very expensive process for many businesses to take on.
Today, the process has improved dramatically and there are even CNC Plasma Cutting that are portable; some models even have air compressors build in for a fuller portability. Many are smaller and are able to cut sheet metal as their primary work but others can output a lot more in voltage and in work. Also as the CNC plasma cutter was created the process could be totally automated; all an operator has to do is key in how they want the plasma cutter to cut and it does the cut perfectly every time.
CNC plasma cutters come in a variety of sizes but they all basically work the same way. If you are trying to describe this process it is simply put that this process sends gas through a channel where it then becomes pressurized. The gas could be argon, oxygen or nitrogen that is sent through this channel. Inside the channel is an electrode that is negatively charged. When power is applied to the electrode and the tip of the plasma cutter is touch to the metal, it creates a full circuit.
At this point this circuit makes a high powered spark that goes through the channel; the gas is heated to a very high heat called the fourth state of matter. When this happens a direct stream of plasma turns the metal into molten slag. What this means is that you have a very high heat and a very fast moving beam of light that hits the metal.
The plasma is what makes the electrical current and this power supply keeps working until the circuit between the electrode and the power supply is broken. Also the cutter nozzle has channels in it so that it can continue to create a consistent flow of shielding gas. This also allows the plasma beam to stay consistent on the metal to be melted.
Some CNC Plasma Cutter have robotic arms that do the work. The point to having this in the CNC mode is that the process is totally automated and it will continue to work to cut with precision as long as the information is programmed correctly into the computer.
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Many people like to build their own CNC Router because they like having something that functions that they have built by their own hands. There are a lot of options when it comes to building things yourself so really you just have to decide if you want to or not.
Some people like to bypass some of the making of the CNC Router and they do this by purchasing a kit. Kits are a good idea to get a start on what you want to do because they show you, step by step, how your machine will work. If you are a visual person who needs something to look at while you build, this will be a perfect way for you to start your do-it-yourself project.
Plans vary however so make sure that the plan you use has the information you need. As an example, some plans give you a brief idea of what you will be doing to create the plan. Others will give you full blueprints that will show you step by step what to do and what it should look like at every step of the way.
Some people prefer to just wing it and try their hand at the building of their own CNC Router. If you are this type of person, having a plan to look at as a guide can be the perfect way to make sure your design is workable. Either way you will have a finished product.
The greatest reason to build your own CNC Router is that you can get the parts for a fraction of what you would pay in the store.
Things to Think About when Making a CNC Router When you first think about making your own CNC Router the first thing you will need to do is decide on a design. There are basically two types of designs that you will have to choose from. Either you want one with a stationary gantry and a mobile bed, or you want one with a mobile gantry and a stationary bed. There are advantages to both types.
Unless you have a smaller machine which may use a mobile bed, really the industry standard is a stationary bed. You will also need to decide on how large you want the cutting area to be which will be determined by the size of the material you will want to cut. As you run through the project there are some things that may change as you start looking for specific parts.
Another item to take into consideration is how big a machine you want. If your space is limited, you will have to consider how far you want your router to travel. This may mean that it just goes the length of the space. In any case you won't want to have wasted space in the area where you are going to use your CNC Router .
One of the final steps is for you to decide what kind of tolerance you want on the machine and then you are good to go. This will speak to the accuracy and the precision of the machine. Once you understand what you want, it's time to look at the steps to building it which will be talked about in a different article.
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If you have a wood shop this your would be crazy to not have a CNC wood router in your shop. The point of this router is that it uses a computer numeric control to cut the wood. This means that all you have to do is set it up and let it do the job. Usually these projects are easy to do if you understand the software.
Most CNC Router use a CAM program so that you can use it with different grains of woods and you can use many different types of woods. If you decide to buy one you will see that many manufacturers carry them and they have many different designs.
Generally, these types of machines can be used to do small or large projects depending on the size of the machine. The possibilities are endless with the CNC wood router as you can cut a variety of angles for the exact piece you are looking for.
Some of the uses that people have used a CNC wood router for include making furniture with intricate patterns and designs, curve and smooth corners on wood, make different designs in wood, or for cutting dados. The tool is very versatile and flexible.
It is easy to think of a CNC Wood Router as a tool that is only used for cutting and shaping but you can do so many things with it. In fact, you are only limited by your imagination as to what it does. When you gain skill at using the tool, you will find that it does many things and it saves you time and money.
There are a variety of projects that you can do with the CNC Router . Here are a few ideas:
Making furniture -- many people decide to use a CNC Router to make a variety of furniture from tables to benches and chairs. They like to do elaborate patterns and designs into the wood and the router helps them do this easily. Many enjoy working with oak or wood for their materials.
Doll furniture - yes some children still play with doll houses and sometimes routers can be used to make doll houses depending on the bits that you use. This is an easy way to do something for your children and use your wood router too.
Toys -- there are a variety of toy projects you can do with a CNC Wood router. You can make checkers and checker boards, elaborate chess sets, game pieces for all types of games. These projects are only limited by your imagination.
Radiator Covers -- some people specialize in intricately cut wood pieces. Some people do a variety of radiator covers for homes that still have radiators. They do them in old fashioned designs like Old English, Vienna and others.
Wine Racks -- if you are someone who has a wine cellar or just has a few bottles you want to sit somewhere try your hand at a wine rack. These are somewhat simple to create and your CNC Router can help you get it done quickly.
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When you are looking for a CNC Router there are many things to take into consideration before you buy it. There are many manufacturers who have what you need and you can get a good bargain if you do some research ahead of time.
Here are some things to think about as you are deciding what type of machine you want to buy:
§ Do some research -- before you start looking for a CNC Router it is a good idea to do research on all the different types of routers available. If you already have used one, then you know what they can do. § Decide what you need -- from the research you do you will know the types of projects you want to do and what different machines will do. Sometimes there will be a very specific CNC Router that will fix exactly what you want to do. Decide on your budget -- As with any big project, you need a budget so you can get a router that has the same features you need and you can still stick to your budget. Buy what you need -- sometimes you will get extra features that you don't really need but you end up paying for them. There are also machines that don't have enough for you, so a rule of thumb is to buy what you need with a little upgrade to make sure you get the performance you want. § Reliability -- you will want to know that the machine you buy will be reliable with larger work loads if you need them. You will also want to be sure that it can handle the load that you use. § Durability -- check the materials in the main parts of your router to make sure that they can make intricate cuts or carvings and that it can withstand a lot of use. This will really depend on the materials it is made from. § Know the Software -- you will have some sort of software, usually CAD to understand so that you will know how to make the machine function properly. Sometimes vendors will offer training on this and if so, it's a good idea to take it. § Create a space -- sometimes people go out to purchase a machine and they find that it is too big for the space they have. This is an important component of buying a CNC router so make sure your router will fit in the space you have and that the floor you have it on can withstand the weight, if the machine is a large one.
Beyond these tips it is important to shop around. If you are willing to do a little footwork you can go where you may be able to try out the CNC Router . Although some people may have used machines it would be better to buy it new so you know its status. Also buying straight from the manufacturer would be better in some cases than buying from the distributor.
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A CNC Router has several different parts that make up its total machine. It is important to know about these components so that you can make sure each is working properly. This is especially interesting information when you are thinking about building your own Router.
The most important parts and components of a small CNC Router are as follows:
1. Worktable -- this is where you will sit the material so that it can be cut. You will use a clamp to hold the material down. 2. Router -- the router is the part of the machine that uses a high speed to turn the cutting tool. 3. Cutting Tool -- this is the tool that cuts the material that you lay on the table. 4.Collet -- you will want this piece as its critical for holding the cutting tool on the router. 5. Dust Extraction Outlet -- this is where you take the dust out after it has accumulated in the machine. 6.Guard -- whoever is running the router will want this because it will protect this person. It is important to keep this down when the machine is in operation. 7. Control Panel -- you can use the controls to use the router either manually or automatically. 8. Stop Button -- this is the button that will stop the machine in an emergency. 9. Door Handles -- this holds the guard into place and will not allow the router to move unless the guard is down.
What you are looking and talking about as far as components go is a small table machine, expect things to be much more complex with with a router. These machines will need the computer component which is the CNC Controller and you will need the CAD software to run it. There are many websites that will tell you more about how to build your own and will have a listing of all the parts necessary.
As you explore the parts and components of a CNC Router you will find that they are made from a variety of materials. As an example, when you are choosing a machine to make, you will find some components in wood, others in aluminum and others in steel. What components you choose will depend on your budget and their availability.
Just like anything else with the web, you can find a lot of your parts and components online at various stores. Sometimes these individuals can really be a good help when you are trying to choose components and parts.
The parts that you choose will also depend on what you want to do with it and the types of projects you are going to use it for. Sometimes you need to take a moment to look at your space then you can design the router to fit that space.
The final consideration is whether or not you want a fully animated machine or not. If you want it fully automated it is obvious that it will need different parts than if you want to use the router by hand. When you are looking for CNC router parts and components it is a good idea to research what you need before you buy.
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Hobby CNC Home DIY CNCers get into Computer Numerical Control for different reasons. It really has a lot to offer as a hobby. There are many challenges to it and that is what draws in many people. This is not something you do just to pass the time. There is a result in mind. Some people make it to DIY CNC through a side door. They come from areas like Combat Robot and RC Modeling. There are many small, precise parts in these hobbies, which CNC is perfect for.There are also people that like to customize things and need a way to make special parts that they can’t get anywhere else.
Here are some traits that people into CNC Possess: Electronics – There are many electronic components you can build yourself. Do you like to solder together power supplies, cooling fans, drivers and processors? CNC would appeal to you. Design – Do you like to think about things in your mind? Then conceptualize them into a computer. Do you have a little inventor inside of you trying to get out? CNC would appeal to you. Manufacturing – Do you like to build things in a controlled process manner? Step by step, process by process. Do you like to optimize and test and make processes more efficient?You would probably like CNC. End Design – Do you have a result or end design in mind? This is what happened to me. I knew where I was.I knew which direction I wanted to head. I then used CNC as a bridge to get there. If you have an end design in mind that is repetitive, then CNC would appeal to you. Money – Do you like money?Is that a good question. Many hobbyists get into CNC Machines to make some extra money or start their own business. Yes, you can make parts and sell them. Guess what, after you design the part, you never have to do that again. You can just call up the program and make some more. Months and years later…forever. CNC appeals to people who want to make money. Challenge of Building a Machine – Some people just get bored and want a project to work on. Building a machine that does something appeals to them. Think of the Model Builders, Woodworkers, Metal Workers and any other type of builder you know.Computer Numerical Control appeals to the engineering builders of the world. The Entire CNC process – I fall strongly into this category. I started into CNC because of a problem, but stayed because I love the whole process of it. I like to design things. I like to build things. I like to make money. I like the challenge. I like the whole enchilada. That is what I want to share with you.
What personal attributes will help you with CNC? I get this question a lot. How do I know if CNC is right for me? Guess what, I have seen it all. Many types of people show up in CNC.Here are some common talents in the cnc field.
Computers – Do you like working with computers? If you said yes then that will help you out. CNC is really computer intensive work on the front end of the process. Software – Can you learn multiple software packages? If you said yes you probably have a flexible software mind. That will come in handy. Shop Skills – If you have skills in the shop, you will be ok. It doesn’t really matter if it is metalworking, woodworking or anything else. Being comfortable getting your hands dirty will help. Engineering Mind – I usually think of this as a problem-solving mind. Trying to isolate things and pin them down. If a problem come up, you test different ways around it. Keeping track of things will help. Artistic Mind – Can you imagine things?Think of the parts and pieces you make. Guess what, creating is very important. Using you mind and thinking of unique possibilities will help. Crafty Mind – I don’t mean in a devious way, more in a building way. Can you take things apart and put them together in your head? Can you see a finished product, and then back track the processes to make it? You will be well served if you can play with things in your mind.
“Wait, wait, wait,” you might say. “I don’t possess all these skills.” You don’t have to. Having some of these skills will only help you on your quest to learn CNC. Again, I have seen all types of people get into and succeed in this field.Your entusiasm to learn cnc, then go out there and learn it will the main factor.
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CAD (Computer-aided design) Geometry authoring tool that involves software and sometimes special-purpose hardware. Current packages range from 2D vector based drafting systems to 3D solid and surface modellers.
CAM (Computer-aided manufacturing) Considered as an NC programming tool wherein 3D models of components generated in CAD software are used to generate CNC code to drive numerical controlled machine tools
CNC (computer numerical control) Refers specifically to a computer "controller" that reads G-code instructions and drives the machine tool.
CAD/CAM part programming The computer calculation and creation of a toolpath based on part geometry information created in CAD.
Canned cycle A predetermined machining sequence used to simplify programming.
Data Information processed as the basis for calculations.
Database Computer storage that holds data and is searchable
Detail Drawing A drawing of a part giving a complete and exact description of its form, dimensions, and construction
Dimension The desired measurement of a part
Documentation A CAD process in which a part design is converted to a computer file or hard copy for reference and storage purposes.
Drawing Exchange Format DXF. A standard storage format for personal computer-based CAD/CAM platforms
Driver That portion of the electronic package that receives the stepping sequence from the translator and provides the switching of the windings in the stepper motor.
G-Coding Common name for the programming language that controls NC and CNC machine tools
Geometric Modeling A modeling process in which a designer creates lines and text that represents the shape of a desired part. Geometric modeling is the first step in CAD.
Geometry The measurement, properties, and relationships of the lines and points of an object that make up its shape
M Code A code used to signal an action from a miscellaneous group of commands. M codes change cutting tools, turn on or turn off the coolant, spindle, or work piece clamps, etc.
Machine Control Data Manufacturing instructions defined in CAM and enacted on a CNC machine.
Machine Control Unit A small, powerful computer that controls and operates a CNC machine
Machine Tool Powered mechanical device, typically used to fabricate metal components of machines by machining
Machining The selective removal of metal or material
Numerical Control The use of computers and special program instructions to execute the sequence of machining operations to make a part.
Part Program A series of numerical instructions used by a CNC machine to perform the necessary sequence of operations to machine a specific work piece.
Personal Computer PC. A computer designed for an individual user and commercial software. Desktops, laptops, and notebook computers are PCs.
Plotter A large printer used to print blueprints. These output devices support vector graphics, unlike dot matrix and laser printers.
Post Processor A software link in the CAD/CAM chain that communicates instructions from CAM to a CNC machine
Preliminary Blueprint A design representing the rough dimensions of a specific part
Primitives or Primitive Basic shapes such as cubes, spheres, cylinders, blocks, and cones that are combined in solid modeling to create a model of a part.
Prototype The original test model of a part
Raster Image A form of graphics in which closely spaced rows of dots form an image on a computer screen. Also known as bit-mapped graphics.
Ramping The process of controlling the pulse frequency to accelerate or decelerate a stepper motor. Ramping increases the ability to drive larger loads at greater speeds by slowing the first series of pulses allowing the motor to overcome inertial loads and reduces overshooting by slowing the motor down more gradually than an unramped motor.
Scanner A computer device that converts hard copy drawings into digital form
Software The coded instructions, formulas, and operations that structure the actions of a computer
Solid Modeling A type of geometric modeling based on solids in which all visible surfaces of a part are shown. In addition, solid modeling describes interior volume, mass, and weight.
Sub-Program Acting as a part programming shortcut, a part program sequence that is called on as needed. Also called a subroutine. Surface Modeling A type of geometric modeling based on geometry only, in which all visible surfaces of a part are shown regardless of volume definition.
Step Angle The angular increment the motor shaft will turn each time the windings (coils) are energized. The angle is specified in degrees. For a 200 step per revolution motor the step angle will be 1.8 degrees.
Step per revolution The total number of steps to rotate the motor shaft 360 degrees. For CNC, 200 or 400 steps per revolution are usually used.
Stepper motor A device that translates electrical pulses into precise mechanical movement. The output shaft may deliver rotary or linear motion.
Title Block A portion of a blueprint that contains information such as the company name, part name, part number, designer, scale, and material.
Tolerance A blueprint specification indicating an unwanted but acceptable deviation from a given dimension
Toolpath The series of coordinate positions that determine the movement of a tool during a machining operation.
Translator An electronic device that converts pulses into the correct switching sequence, which will operate the motor one step for each pulse received.
Unipolar A bifilar wound motor. The current flows only in one direction through each winding. Normally there are two winding per bobbin and eight bobbins per motor. Usually is a 5, 6 or eight wire motor. One or more common leads are used per winding. Has less torque than a bipolar stepper motor but is simpler to drive. Bipolar stepper motor- just two windings. The electronic controls reverse the current alternately between the coils. This motor has more torque but requires more electronic controls.
Vector Graphics A form of graphics that uses geometric formulas to represent images. Vector graphic images are more easily manipulated than raster graphics when dealing with CNC.
Wire Frame Modeling A type of geometric modeling in which the edges of a part are represented by solid lines
Working Drawing A drawing of a part providing data for manufacturing
X-Axis An axis that is left or right. All movement left of a zero point is minus (-X), all movement right of the zero point is plus (+X).
Y-axis An axis that is at right angles to the X-axis and intersect the zero point of the X-axis. All movement further away from the zero point is plus (+Y). All movement closer than the zero point is minus (-Y).
Z-axis An axis that is vertically perpendicular to the X-Y zero point. All movement above the zero point is positive (+Z) while all movement below the zero point is (-Z).
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CNC Intro Questions, Questions and a few more Questions What is Computer Numerical Control? What do the letters “C-N-C” stand for? How can it help me? Why would I want to learn it? Where do I start? Do I need special software? If so, which one? Do I need a machine? If so, how much?
We will get to these questions shortly and cover each of them. What has probably led you here today are questions? You have problems you want to solve and you think CNC can help? Guess what, that is exactly how I began the CNC journey as well!
So, where am I at with CNC today? Today I have multiple CNC machines that I work with. Each have their own nuances, software, capabilities and functions. The point of it is that they are all CNC. They all follow the same basic process.That process is gold if you know it. You can move from machine to machine and know what is going on. That is what I want to teach you.
CNC Machines I own today: CNC Plasma Cutter Machine – My 1st CNC machine.A good project if you want to build your own CNC machine. Born out of necessity. She is a little rough around the edges, but a solid friend. Vinyl Cutter – This is a unique type of CNC Machine. This machine uses a small knife to cut out vinyl in any shape or size. Think “sticker machine.” You know the stickers on the back of every jacked up truck you have ever seen. You know, “P_ss on Chevy, Ford, Dodge, etc.A vinyl cutter is actually a “sticker-making machine.” I actually bought it to cut sandblast resist, which is a whole different story. CNC Mill – My 3rd CNC machine. This one I purchased. It is actually a CNC Bridgeport Clone if you want to get technical. It is funny how addictive this hobby is. I bought this machine to make the parts for a CNC Wood Router. “Wait, you bought one CNC Machine to build another CNC Machine?” The answer is…. YES! I love this hobby. CNC Wood Router – My fourth machine.My dad likes wood working and I like metal working.This is kind of a transition machine for me. I have found woodworking with CNC to be really cool. It has gotten me into 3D milling on the cheap. Think of the cost of 3D milling a brick of aluminum or a block of wood into a shape. That’s right. No Brainer. Wood is free in comparison.
CNC Hobby Growth Story CNC as a DIY Hobby has really seen a growth spurt over the last ten years. I think I stepped into it about two years after it started cooking in the late 90s. When I jumped in there were a few CNC Groups going already and about three different CNC Plasma Tables available at the hobby level. I don’t know where the other machine types were at the time because I came in through the plasma path. I would guess they were further behind as CNC Plasma Cutters was one of the first areas of CNC to take off in the Hobby arena. Most of the growth I would attribute to the Internet. Groups formed, ideas were shared. Feedback was given. People started making “chips” and didn’t look back.The Internet brought technology into garages across the country. When I built my $4000 CNC Plasma Table a hobbyist class machine was around $10,000 and a commercial machine was $100,000 to as high as you wanted to go.
CNC Information Free Community Site: If you would like to know more about Computer Numerical Control, go on over to http://www.cncinformation.com You can join for Free and you get two free CNC ebooks. One is a GCode Quick Guide and the other is the CNC Info Site eBook. You also get access to the Free Video Series...Image to CNC Art when you join the community.
CNC Control Here is my definition of CNC Control and how I like to think about it.CNC Controlling is using a computer to direct functions and motion. The control phase of CNC is closely associated with the Machining phase. Why? You are using a computer to “control” the machining process. However, there are a few different pieces to controlling. Here we go again. Let’s break it down and simplify it a bit.
CNC Control Software Control Software is one of the critical things you will need for CNC.The CNC control software is what reads the G-Code line by line and sends commands to your CNC machine.
Probably the standard in the hobby market is Mach. There are different versions: Mach1, Mach2 and Mach3. Mach is created by a company called Artsoft and has an excellent reputation in the marketplace. The software is easy to use and very powerful. The company also provides great service and is always working on the next generation of product. I have used a couple other control software packages as well like CNC Pro, TurboCNC and Master. They seem a bit outdated compared to Mach, but serve their purpose and work well.
Quick List of control software Mach 3 TurboCNC KCAM4 CNC Pro
Control Software Prices: CNC Controller prices vary all over the map. There are some that are free and some that are Thousands of dollars. If you are a hobbiest, expect to pay somewhere between free and $200. If you are running production equipment, expect to pay thousands of dollars.CNC software is essential, you need to make the commitment.
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Process of CAM CAM Process is a process just like the rest of the steps in CNC. You need to do certain things before it spits out the tool paths and then the G-Code. These things you need to define change with the type of CAM you are using and the CAM program you are using. They are all similar, but a bit different.
Here are the CAM Steps: Define Material Define Stock Size Define Coordinates Define Tool Define Feeds and Speeds Simulate Machining Post Process
Define Material You will need to define your material before you begin your machining. For example, if you are machining wax, your feeds and speeds you define later can be faster. If you are machining steel, you will need to slow things down. Most times the type or composition of the material will not need to be defined in the CAM program, but you will need to be very aware of it.
Define Stock Size Next, you will need to let the CAM software program know what the size is of material stock you will be using. You are usually defining the “box” or “cylinder” you will begin with. The machine needs to know where the stock starts and ends so it can make sure to remove all the material it needs to.
Define Coordinates How will the machine know what is 0,0,0 in the coordinate scheme? You need to tell it. You will pick a corner of the stock box and let the machine know that is exactly 0,0,0. That is also where you will need to “zero out” your machine at. This is the beginning point for the CNC Machining operations. It is also usually the ending point of the program as well.
So what is the best spot to pick for 0,0,0? There isn’t one. It depends on your machine and how the axis’ are laid out in your brain. For me, I like to pick the “Highest Z Point” and the “South West Corner” because that is where zero is in my brain. I have also set all my machines up that way.
Define Tool Defining the tool is an easy process. If you were going to use a tool, would you like to know what it is and how you are supposed to use it?You need to let the CNC machine know what tool its holding and what size and shape that tool is. The machine needs to know the diameter, length, offset, and how far the tool sticks out from the spindle so it does not crash. If the tool is a plasma cutter, the CAM program will need to know the width of the torch cut. It can then compensate for it.
Define Feeds and Speeds Next, you need to let the cam program know what feed rate want the machine to move and how much material you want to remove with each machining pass. This is where defining your material above comes in. I will not get into the calculations here, but each material and tool combination has an optimal Feedrate.
You will also be adjusting the spindle speed in this step as well. All these pieces of the puzzle interrelate with one another. Imagine the spindle going slow, with a fast feed rate. You will probably damage your machine. Imagine the spindle going fast, with the feed rate extremely slow. You will have low productivity and probably prematurely wear your tools. All this adds up to the fact you will have to use your brain and gain some real life experience.
Simulate Machining This is my favorite step. Here you run your program on your virtual piece of stock and watch the material being machined away. How cool is that! You get to see what you did before you try it out on your expensive CNC equipment. As I said before, this is like proof reading what you did while programming. I have found a ton of problems and fixed them before I ever got out to the shop.
Tool Paths When you are done simulating the machining, you will see tool paths. Tool Paths are one of the outcomes of our CAM process. Tool paths are literally that, the path that the tool will follow while machining. CAM Software shows us these paths so we can follow what is going to happen. The logic of the CAM Software determines where these paths will be and in what order they will happen. The tool paths will then be converted into G-Code in the next step.
What are tool paths and how do you create them? Tool paths are the paths the tool will take around and through the piece of material to create the part. Tool paths show up as a very thin wireframe movement paths in the CAM process. This is to show you where the machine will be traveling. You want this so you can see if there will be any interference issues while machining.
Once the tool paths are generated, you can usually watch an animation of the action. You can “virtually” watch the machine work and machine the material. This is a very helpful feature of modern CAM programs. I don’t know how many times I have found a problem in the simulation before I ever made it to the shop.
Post Process Finally, you post process the program you created. This is where the G-Code is created. You pick the appropriate post processor for your CNC Machine and press a button. The CAM program takes all your inputs and spits out a G-Code program that you can load into your control software and away you go.
Post processing is literally a one-click process for most CAM programs. The only pitfall as I said was that you must pick the right post processor that is matched to your machines set up. Most CAM programs come with dozens of post processors and one is going to likely fit your setup.
CNC Machining Simulators Most CAM programs come with a simulator. Some are basic and weak. Others are outstanding. There are a few stand-alone simulators on the market that you can run your G-Code through.
CNC Simulator Examples: Cncsimulator.com Mach
CNC Information Free Community Site: If you would like to know more about CNC, head on over to http://www.cncinformation.com You can join for Free and you get two free CNC ebooks. One is a GCode Quick Guide and the other is the CNC Info Site eBook. You also get special access to the Free CNC Video Series...Image to CNC Art when you join the community.
It has been a dream for computer equipment manufacturers to produce a portable keyboard. The new portable bluetooth keyboard choices that have recently come onto the market seem to finally fulfill the promise of hi-tech future we all watched as kids in movies and cartoons. Choosing the best bluetooth keyboard is a personal choice, which requires you to determine your needs and your wants.
How do you want your portable bluetooth keyboard to look?
I know people who will not buy certain computer equipment because it’s the wrong color, and doesn’t match the rest of their computer system.Many people really do not bother about the looks of the computer equipment so long as it work adn serves their purpose. You need to figure out which one you are before you start your search.You will be additced to your choice for a while.
What keyboard configuration do you need on your portable bluetooth keyboard?
The choices now available allow you to choose between the mini keyboard and the QWERTY keyboard. Since many people have become so comfortable with their mini keyboard configuration they wish to continue with it and some people cannot wait to have a regular (QWERTY) keyboard again. Which bluetooth keyboard is the best bluetooth keyboard for you will depend on your ease with the keyboard configuration. Make sure that you are most comfortable with the keyboard you choose or you may choose not to use it for portable computing.
Do I require a physical portable bluetooth keyboard or do I want a virtual portable bluetooth keyboard?
This question may seem a bit strange if you haven’t been watching the tech new lately, but you now have a choice of a virtual keyboard. How the virtual portable bluetooth keyboard works is that a device, a small one, projects a virtual protable bluetooth keyboard onto any flat surface.The flexibility in the virtual keyboard is the ease of typing.The tech-savy users would love this one.You can use it when you actually need to type and thus gives you more space freedom.It would give you the flexibility of locating it, if you have very limited space available.
What Is Bluetooth?
A portable bluetooth keyboard incorporates the bluetooth communication protocol for computer component connection and works along a standardized set of guidelines.The standardisation on how the bluetooth hardware should work has brought real value to bluetooth. If its bluetooth compatible it will work.This is what makes the brain and handiness that is bluetooth.
If you already confused by the many registry cleaner reviews websites, I might just be able to help you! In this article, I will outline different types of review site and show you how to use them to find your own consistent result and best registry cleaner.
Some guidelines to follow:
Rule #1 - Does not believe what they tell you. You should always prepare to test your result, if you have limited time, just select 5 to 10 of the recommended products and do some simple test on your machine.
Rule #2 - Reference the review sites and set your own guidelines. You can easily set your own testing guidelines with reference to what already being used.
Rule #3 - prepared your testing environment. I urge you to use Microsoft Virtual PC as an evaluation tool to help you in your testing process. Replaced the tested registry cleaner with the backup operating system, ensure each registry cleaner has the same testing ground.
Some suggested guidelines:
Guideline #1 - How many errors detected, the more the better because the more errors found, the windows registry size can reduce to smaller and faster!
Guideline #2 - How fast the software finished scanning will determine how optimize the software is.
Guideline #3 - How safe to repair, any auto-backup provided?
Guideline #4 - Any advanced tools or extra features to accelerate the computer speed?
Guideline #5 - Provide protection to known ActiveX dlls from spyware and unknown thread!
Guideline #6 - How effective is the deep scan? will it be able to capture indepth registry problems?
Guideline #7 - How effective in restoring computer speed after repairing your registry? Do you really feel the speed?
With 3 rules and 7 guidelines, you don't have to rely on other registry cleaner reviews sites to tell you which is the best registry cleaner, because you tested it, and you know what is scam and what is not!
