Topic: Printing a backup 3D printer
Once I'd got my solidoodle 3, one of the first things I wanted to do was make sure I'd still have a 3D printer even if it broke. At first I thought about just printing spares of the 3D printed parts, but this has quickly morphed into building an entire back-up printer.

The current state of my Prusa Mendel, printed on a solidoodle 3.
Does anyone else print sets of spare parts in case their printer breaks?
