Spool Holder for Prusa i3 Rework (wood frame)

I've changed the original design to better fit my frame, which is 0.6cm thick. The holes for the M8 threaded rods where too large (10mm in the model), so I reduced it to 8.5 mm, giving a much better fit.

Also included is the small disc I use to constrain the spool over the rollers.