I replaced the ball screw in the machine now. I had Zapp Automation machine a "custom" ball screw for me which was a great job. Fitted like a dream.

I posted a video of my test on the machine.


Now I have a problem which I'm not to sure how to sort out. Positional accuracy is pretty good. I machined a test part but I'm a little out. I'm guessing the backlash compensation will sort it out but I'm not sure how to ensure I get it right. What procedure should I use to see how much backlash I should compensate for?

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