Hi Guys,

I finished my diy CNC its all working fine but its moves a bit slow.

Mach3 software.
TB6560 Stepper driver 1/2steps Link
28Volt 15amp power supply
NEMA23Link
Stepper motor direct connected to Lead screw 13tpi

Mach3 set to 2047steps per rev (i work in Milli Meters) now i cant get the Speed above 50-55 units per min(CM). so thats 20inch per min. If the speed is set above 55 the motors start whining and stop turning.

kernel speed 25khz.

I have been looking over the forum but haven't found a solution yet.

Regards,
Martin