This is a spool holder that mounts to the back metal plate of a Makerbot Mini, to hold much larger spools. Only three parts are needed, and they can all be printed on a Mini, and snap together for a clean look. There were other great designs, but with too many parts, and I wanted everything to snap in place.

Files and details are on GitHub: https://github.com/thrasher/makerbot_mini_large_spool_holder