I have been thinking of making a cnc wood router for some time now. As I am a college student, I don't have much money therefore I'm looking at cheap ays of building one. I had a thought not too long ago on how to make one really cheap and very accurate. On a standard cnc machine, the axi operate on twin slides and a ball screw to drive it. the problem here is that these polished slides are very expensive along with the pillow blocks. The ball screws are also very expensive. This is what I thought. If one were to make a machine that operated on a rack and pinion. A person could extend the machine if needed simply by adding more racks and the only things to be bought would be the gear and the track, which, arent' that expensive. This also would solve the problem of axis skewing, making the machine more accurate. Tell me what you think... |