Originally Posted by picco007
Have a question about a lathe.
When cutting the comm there are lines left on the comm. I have changed bit's and that is not the problem. One hudy bit is fine and a newer hudy bit is brand new. Both cut the same. I've tried to tighten and loosen the slide set screws to see if that is it but no change. I've tried bit height and even tried 2 cell versus 4 cell to run the lathe and it looks like it has serrations throughout the whole comm.
This is a hudy tech lathe with axial support.
Thanks in advance.
I have the same one you are using. the only time the lathe will leave grooves is if your rotor has play between the axial supports or the bit support has slop in it.
make sure all the screws are tight and rotor is free but without sideways play.
you bit should be centered on the comm as well. use a permamnet marker to mark the comm.