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Build Your Own CNC Machine by James Floyd Kelly, Patrick Hood-Daniel

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Chapter 4. Movement Using Rails

Your CNC machine isn't a static device. It will be using motors and other hardware to move up, down, left, right, back, and forth. This movement will need to be as smooth as possible. Imagine trying to cut or drill something by hand while someone behind you keeps pushing, pulling, and jostling you. It would be extremely difficult. Like most people, you'd do your best cutting and drilling without any outside interference.

Your CNC machine requires the same environment. You can control certain things such as the surface that you place your working CNC machine on; flat and nonmoving is best. (This rules out sitting it on top of your washing machine during the rinse cycle.) And when it's operating, you can ensure the ...

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