Turning Bearing journals on Trapazoidal Lead

[GPZ_Rider]

Hi ppl

Am in the midst of my first cnc build and have had major trouble getting the X Axis lead to spin true on its bearings due to a .2mm out of center 3 jaw.

I have been laying the screw on v blocks and marking up with a dial guage then returning that to the lathe and "squaring" up as best as possible. Repetedly using this method and a great many expletives I have managed to get the screw somewhere near satisfactory.

For future reference, some one must have a better method.
There must be a better way to dial this up whilst on the lathe ???

Cheers Mark