One Piece Filament Spool Holder For 20mm Extrusion

This is a spool holder to go with my Voxel Ox 8" 3D Printer. It is designed for minimal plastic use and print time, while still being plenty sturdy enough to hold full 1KG spools

It mounts to OpenBuilds V-slot extrusion, but any 20mm based extrusion should work fine.

2 M5x8 bolts with tee nuts are used to secure the piece to extrusion.

The spool holder was designed to fit every variety of spool I have come across. Particularly Taulman spools which have a very small center hole com