A print-in-place clearance test with seven captive rotors, from 0.10 to 0.40 mm, for printer tolerance calibration. Free, multicolour 3MF.

PRINTING: Print flat, 0.2 mm layers, 3 perimeters, 15 percent infill, PLA. Use a 5 mm brim (slicer check: the small rotors need a brim). NOTE: Slicer-checked in PrusaSlicer (brim needed); not yet printed by me. Designed with Python scripts in Blender with the help of an AI assistant; no third-party meshes.