Spool Hub for Virtual Foundry Copper Filament

This was created for the Virtual Foundry Copper Filamet 0.75kg spool. It is intended to work with a 1" shaft. This filament can be very easy to break off of the spool. I found that the tension between my wall mounted spool holder above my printer and my extruder was enough to snap the filament sometimes. This allows the spool to turn more easily around the 1" bar on my spool holder with less tension. It may also work with some other spools.