Hey,
I've recently built my own CNC, and so far it's working fine. The only problem I've encountered is that the motor on my Z-axis gets seriously hot after about 20 minutes of machining. Too hot almost to touch, so it's getting into the range of temperatures I'm not comfortable with.
The problem here ofcourse is that the Z-axis generally moves the cutter in position and then just sits there, soaking up the full 1.5A the driver supplies it with. I'm using a standard M8 leadscrew, so there's no real reason for the Z-axis stepper motor to actually be on when it's not being used. I'm pretty sure I've seen an option in Mach3 somewhere to disable steppers when they're not in use, but I can't seem to find it anymore... Any help would be much appreciated.
Erant