The file 'Canon EF Extension Tubes 3D Printer Model' is (stl) file type, size is 135.66 KB.
Changed to make a 60mm and a 20mm version. Stack a 50mm (original), a 60mm and the 20mm to make these awesome macro photos!
I used thin layers to print better overhang (I think it was 0.15 mm)
Canon 600D, Sigma 70-300 APO DG
