Overhead Filament Spool Holder (Lulzbot Taz) - With Retaining Pin

Overhead spool holder for a Lulzbot Taz printer. This is a remix of KillaCycle's spool holder, but I've modified it so that the crossbar between the spool towers is held in place by retaining pins.I didn't want to use a threaded crossbar since it would wear out over time, so this seemed like the simplest solution.

I also narrowed the ridge that fits in the t-slot of the printer frame by 0.5mm since it seemed just a little bit too wide to drop into my frame easily.