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z axis calibration
Posted: Thu Oct 09, 2014 10:02 pm
by faffer
Hi Steve, My first print turned out just great using your software. I've run into a bit of a problem on the z axis calibration. I've attached some pictures. There seems to be a drift as the z axis distance increases, is there a way to do fine adjustments? or is this a firmware problem? I'm using the Uncia
Re: z axis calibration
Posted: Fri Oct 10, 2014 11:40 am
by PacManFan
Can you determine how much it's off by?
Start at a position, and move the z axis 100mm using the software. Measure it and let me know how much it's off by.
Thanks,
-Steve
Re: z axis calibration
Posted: Fri Oct 10, 2014 8:21 pm
by faffer
off by 3mm for 100 mm travel
Re: z axis calibration
Posted: Sat Oct 11, 2014 12:44 am
by PacManFan
Re: z axis calibration
Posted: Sat Oct 11, 2014 6:22 am
by faffer
I did an accurate measurement today 102.8 mm
Re: z axis calibration
Posted: Sat Oct 11, 2014 8:22 am
by faffer
Brandon Pomeroy picked up my thread on this issue and did a mod on CW .I get 99.60
attaching his file
Re: z axis calibration
Posted: Sun Nov 09, 2014 9:14 am
by dangre
Did this ever get resolved? If so what was the solution?
Re: z axis calibration
Posted: Mon Nov 10, 2014 6:22 am
by PomeroyB
dangre, the problem was that CWS approximates the Uncia's steps per mm to be 90, when the actual value is closer to 87. I posted a recompiled version of CWS that had the correct value on the Uncia Google Group.