Tiêu đề Xúc xắc D12 - kích thước 30 mm khối mười hai mặt T

Dodecahedron D12 dice - each face is a regular pentagon with numbers from 1 to 12. Order of the numbers is copied from a commercial D12 dice. The size is 30 mm, so it can be used as a calibration "cube" for Z axis. No need for supports.