3x3 Calibration Grid - Prusa Mk2.5/Mk3

thingiverse

Use this Grid to help optimize first-layer adhesion. G-code file includes a warmup routine to improve accuracy of bed-leveling. The print will appear to do nothing for a minute or two as the PINDA probe warms up via close proximity to the heat bed. If printing fails to begin, ambient air temperature is too cold/drafty. Try insulating the PINDA from drafts with a folded sheet of paper or aluminum foil. Once printing begins, remove the insulation.