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Topics - outbackflyer

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General Mach Discussion / Mill x,y distortion problem Need Help
« on: July 26, 2009, 07:20:02 PM »
I am in the process of setting up Mach 3 on my Grizzly mini mill. I have a distortion problem. When I cut a circle I get an oval. Example. A 1.25" circle will be 1.150x1.20 - A .050 distortion with the Y being greater than X. I have done the following.

1. Auto tuned the steppers using the "Axis Calibration"  after doing this I get very good DRO in Mach 3 GUI and real measurements on the table.
2. I have used the wizard to create a simple circle and used Gcode from my BobCad program. Same results.
3. Set "Exact Stop" and "Constant Velocity" both settings produce the same distorted results.
4. Slowed my feed rates.
5. Enabled backlash and disabled. Same results (restarted after change)

Any help is appreciated - Thanks

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