When printing with FDM printer make sure to setup highest quality possible. I printed those successfully with: 0.1 layer height 100% infill. Tree Supports Best results I had, was to print on the side facing away from you.

This robot is made with parts stolen off of 0-waste, by Bio Punks - subculture revolving around electronics and biological re-use. Currently 0-waste sp00ders can be seen cultivating Bio-Domes as a substitute for real insects. Printed with 0.2 layer height and basic Cura settings for that. My printer required brims, however results may vary.