Parametric 20mm Test Cube

A clean 20×20×20 mm cube, nothing more, nothing less. The ultimate dimensional accuracy test for your FDM printer — grab a caliper and check: all sides should measure exactly 20.00 mm.
✅ X/Y/Z spot on → steps/mm perfectly tuned
✅ Perfect 90° corners → squared frame
✅ Flat, smooth surfaces → temperature and speed dialed in
Recommended settings: 0.2 mm layer height · 4 walls · 20% infill · no supports needed.
Ready-to-print STL — just slice and go.