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Topics - slinky7

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General Mach Discussion / calibration still off? Parts not right size.
« on: December 18, 2011, 06:37:25 PM »
I calibrated all my x axis and based on my measurement I am .0003 off when moving 1" on my dial indicator. When I move
my X axis say 20" I am off about 1/8". It seems the further the movement the worse it gets. I do not understand why this is
and how can I fix it. I have let mach calibrate my X axis as best I can but still can't get any better the .0003 when moving 1".

My cnc machine is made of 8020 with 2 - 5 start 10 TPI acme screws and has two leadnuts with anti backlass if this helps.


-Dennis ???

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