Spring-loaded tool holder for Prusa i3

This all-purpose spring-loaded tool holder fits the extruder mount holes on the X carriage of the Prusa i3. It should handle rotary tools (Dremel, Micromot), engravers and can accommodate Sharpie and etch-resist pens. The only disadvantage of this design is the very large Y offset, which reduces the usable Y axis by 55mm. This should be addressed in the next iteration.

Spring tension is adjustable. Works with #6 machine screws, may also work with M4 parts (see instructions)