Printrbot Play Filament Stopper

This is an attachment that clips onto the edge of you Printrbot Play's spool holder. I ordered a filament starter pack and I had a bunch of rolls of filament without the solid spool. When the printer was printing it would pull the filament off of the spool holder and would get tangled up. Because of this I could not do unattended prints. I designed this and printed it in under 20 minutes. It works great and is super simple.