Calibration Axes

thingiverse

To optimize my printer's steps/mm and alignment accuracy, I designed a calibration model. The standard 25mm cube showed more error than desired, so I created a 100mm model with axis markings for better measurement. After printing the model (with at least 0.6 infill), measure each axis' length and calculate the correction factor by dividing 100mm by the actual length. For alignment, check against a set square; adjust rails if needed for 90° angles. My initial results were X=99.7mm, Y=100.02mm, and Z=100.00mm, aiming for less than 0.1mm error. Angular alignment should be less than 0.5mm over the 100mm span.