My recent guitar project got me stuck on a routing problem I realized I could only solve with a CNC router. So I'm building one. 1200*800*500mm rails has been ordered and 3*nema 23's with 3Nm steppers, dm556 and mach3 usb board. I intend to use two lead screws to lift the gantry, driven by a belt and drive the Y with a stepper that has a steel rod with two pulleys running belts. Z is regular belt driven. The gantry I intend to make with four 40mm square tubes and plywood, putting a 2.2kw spindle in the middle, so it'll be pretty heavy, but rigid.
Since I've never had a CNC machine before, my knowledge is limited. I wonder if anyone could give me a clue to what type of belts and lead screws I should use. Would a 15mm GT2 be strong enough for this? And would 10mm lead screws with 8mm pitch work? I'm considering counterweights, though that would put more weight into it, so if I don't need it, maybe not.
Since I've never had a CNC machine before, my knowledge is limited. I wonder if anyone could give me a clue to what type of belts and lead screws I should use. Would a 15mm GT2 be strong enough for this? And would 10mm lead screws with 8mm pitch work? I'm considering counterweights, though that would put more weight into it, so if I don't need it, maybe not.
This is a companion discussion topic for the original entry at https://www.cnczone.com/forums/mechanical-calculations-engineering-design/466678-guitar-builders-cnc-new-post.html