I have a handful of 31.2oz-in stepper motors (Mouser.com - Applied Motion: HT17-268D), and I was curious if they would be big enough to run a 3D printing/cutting/etching type (think RepRap) of machine. I had in mind to attach them via a simple gear to a screw-type drive to run the tool head back and forth.
- Maximum bed size would probably be ~1.5'3.
- Heaviest tool head would be something about half the weight of a Dremel tool.
- Hardest substances I would use it on would probably be hardwoods (with high speed cutter) and copper (for PCB etching).
How do I figure the amount of torque needed to drive the head, and would the motors that I already have be big enough to do the job?