Squircle Calibration Cube

thingiverse

20x20x20mm calibration cube is designed to expose problems such as X/Y/Z/E step miscalibration, where all axes should provide an accurate reading of 20mm when measured with calipers, utilizing a rounded section for X/Y measurement and a filleted Z axis to avoid interference from linear advance miscalibration. Inadequate cooling on lettering overhangs can be identified by small overhang sections that are sharp with minimal 'sag'. Linear Advance miscalibration on the squared corners is evident when corners appear sharp without any 'bumps'. Ghosting/ringing issues can be detected in sharp lettering and dedicated dimple sections, which should show little to no ghosting. Print this calibration cube in whatever material and print settings you're trying to calibrate with.