Eggbot Arm Fix for non-spherical objects

prusaprinters

This is a re-design of the https://www.thingiverse.com/thing:2422393 Eggbot arm, to allow to draw on Eggs. In order to draw on non-spherical objects, you have to set the point of rotation lower than the center of the Egg. This design has two little dots, the lower one for really curved eggs and the upper one for larger eggs. There is also an alternative arm, with less flex, because it uses a bendable piece of plastic. This leads to more accuracy.