Hi, I run a small mdf mill at around 6 IPM with printer motors rated at 3v running on 12v with balast resistors and 5/16 all-thread to drive the x and Y.
I get 200 steps OR 400 half-steps using my controler. Frequency I can reach on the controler is around 1000hertz which are steps or half steps. Of course, using half-steps enhance resolution but decrease a bit the torque. I probably would be able to drive it in steps at around 1200 hertz for about 8IPM but that would be limit.
Well, I say all this because I made the mill, then added a small bow to cut foam on the Z axis carriage and swaped Y and Z in my FOAM config file for TurboCNC. Now I can draw x-y stuff and cut it vertically.
Good luck, it's really a blast to make those forms.
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