SmartrapCore Spool holder

A very simple device to hold your filament spool : drill an 8mm hole in one of your SmartrapCore's wall, insert a M8 x 100 bolt, put the 608ZZ bearings inside the printed parts (it's the exact same piece on both sides, just print it twice), hold the whole thing with washers and nuts, and lets roll (and not rock), baby! :)
The cone shape should adjust to most spools sizes. I use it at home with a 75mm wide spool (60mm diameter central hole) and it works really fine.

Update (10/15/2015) : ad