Re: Small lathe build with "ATC" Automatic Toll Changer Turret!
Steppers will run cooler at speed not hotter because the average current is lower at high speed. You need to lower the idle current or running current or the PS voltage. Running them slower is the wrong approach.
If you post the stepper voltage and or inductance it is fairly easy to calculate. The rule of thumb is the supply voltage is 32X the inductance. The China drives will let you set the idle current or set it to be be full power and if you run full power they will get really hot. You might want that on a lathe so a lower current or supply voltage might be what you want.
Steppers do run hot almost too hot to touch.
youtube videos of the G0704 under the name arizonavideo99