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Can't calibrate steps per mm... 24.78-25.08mm on 25mm test print

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Like above.

I'm trying to make sure that I can print something else than cubes, but it keeps going off chart with size... Can set it right as while on center I managed to get 25.00 / 25.06 / 24.96 (still not great) but I tried to print on side and I got 24.76 / 24.85

Any one can tell me how to set it right so I can start printing something more complex... ???


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You should not change the steps per mm on X or Y or Z axis as they are dependent on the hardware which shouldn't change from UM to UM. The variation you are seeing is from things like shrinkage, overextrusion, and play (aka backlash).

You should print the part you want to print, and then figure out all the dimensions that need correcting - ones that must absolutely be corrected - and fix only those dimensions in the CAD.

I don't think you can get more accurate than .1mm so if you are getting .06mm accuracy then that is probably better than anything I've heard of being possible.


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