axis calibration
thingiverse
To check if my printed parts were consistently 0.9% undersized, I measured a L model using the 140mm and 20mm measurements in both X and Y axes. If the deviation percentage matched, I'd adjust the firmware value (previously set at 64 steps) to 64.64 for both axes; otherwise, it indicated loose belts.
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With this file you will be able to print axis calibration with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on axis calibration.