50mm calibration slab for checking inside dimensions and thin walls —

Founded 50mm calibration slab for checking inside dimensions and thin walls models & stl files for printing
Calibration Cube 40mm
mrmechanicen
Anger  inside out
Gurugugnola
Fear  Inside Out
Gurugugnola
Sadness  Inside Out
Gurugugnola
Number and alphabet blocks
Nathaniel Stenzel