Hi there...i picked up a used sherline cnc lathe 4410 + rotary table with a computer UCCNC installed, a UC100 dongle and a sherline stepper motor controller. It also came with a imach 3 p4s pendant.

As per my title, I am a total newbie. I have used the lather manually for the last couple of months but now would like to use the cnc element to manufacture prototype parts.

Everything seems to be working. I can move the 3 axis with the pendant and UCCNC using the step control.

However the continuous mode does not work and I can only move each axis step by step if the step size is very small (0.001) and I increased it slowly. If I move the pendant wheel too fast, the stepper motor does not follow. The same happens if I move each axis with uccnc. It only works if I select step and step size of 0.001 and I pause between the steps.

I was wondering if you would have any idea of what is wrong.