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General Mach Discussion / Re: Sizing my parts
« on: June 21, 2017, 03:16:33 PM »
Thanks guys. So I adjusted the "steps per unit" that didn't exactly fix the problem. When I set the steps to compensate for the extra .010, the parts were still comes out .002 - .005 big. There are 40000 steps so I adjusted that to 39900 which should be mathematically correct. This was very disappointing. I have set up indictors and run the machine back to the exact machine positions and found about .002 TIR. which still doesn't explain why my parts are big. If that .002 is back lash I think I could live with it. If anyone has some other ideas I'm open to trying them.