Calibration step X Y Z - X Y Z step calibration

thingiverse

These parts will enable you to calibrate X Y Z motor steps, taking into account scale factor data from an excel file provided. The scale factor is what makes correcting a measured dimension such as 20.12mm into the 20mm required on a calibration cube achievable by adjusting the step from 80 to 79.5 (20 x 20.12 / 80 = 79.5), effectively converting the length of 20.12mm into 20mm (20.12 x 79.5 / 80 = 20) but unfortunately converting a length of 200.12mm into 198.9mm (200.12 x 79.5 / 80 = 198.9). Step calibration is done by measuring error on multiple lengths to ensure the error comes from steps or retraction during cooling, not printing imperfections such as vibrations. Ideally, this should be done over all accessible printer space but a caliper must first be adapted for this purpose. Measurements will therefore be taken here up to 150mm max. Begin by adjusting the spiralize mode with zero percent infill to obtain wall thickness equal to nozzle diameter plus twenty percent max. Next, print step calibration parts with minimum wall thickness of point eight and minimum infill of ten percent. Measure between planes with matching colors (see image drawing).