Marvin with Improved Crotch

cults3d

This is the classic 3D Hubs Marvin keychain with some minimal improvements. This is one of my favorite printing tests because it has some challenging parts, but I noticed that the prints always had a little curl between the legs. This is because the original model, being constructed from a sphere shape, has an actual overhang there. Unless you would print with supports, this results in one or more circles being printed in thin air. I modified this part of the model so the overhanging zone is replaced by a bridge, making it perfectly printable without supports. I also made a small adjustment to the little overhang between the eyes, because that was another problematic part, it required a horizontal line to be printed with one end anchored to nothing.