Dual extruder calibration test print

This is a dual material remix of Spherical Differential. To make them more interesting when in motion I've given the the gears a candy cane twist.

I originally uploaded the base and top STL files after generating them using OpenSCAD. It quickly occurred to me that I hadn't thought about any overlapping regions between the two STLs. In the original combined STL, any overlapping objects in the scene would automatically become union-ed. But, in a two colour print, these areas would have both materials dispensed. I revised the base STL by subtracting (difference) the top STL from it prior to uploading.

deux porte-outils pour impression 3d two tool holders for 3d printing