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Messages - jglohr

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General Mach Discussion / Re: Repetitive accuracy shift
« on: June 09, 2014, 10:00:53 PM »
Hi Hood,

It is the actual measurement, with a dial indicator. It is just very strange how repetitive the error is, yet only ever other test run. Thanks

General Mach Discussion / Repetitive accuracy shift
« on: June 09, 2014, 08:46:13 AM »

I have my mill set up with steppers and everything seems to be moving smoothly with no steps missed. When I calibrate the steps per unit, and run four test runs in a row, in the same direction, after every two runs it changes .005" (example: .100, .100, .105, .105, .110, .110 etc). It is very repetitive in this pattern and is present in all three axes. Any thoughts?

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