RoboHand - The Revision

Reduced print time by using a ball joint in the thumb which allows it to be laid flat on the print bed.  Modified the tendons from a continuous layer (in the original these were single, unidirectional filament layers which readily separated) to using individual filaments with spacing I have used for filament supported models.  Other minor changes.

PLA / 0.3 mm layers / 2 perimeters / 15% gyroid infill / 3 solid layers top & bottom