Profile 2020 spool holder (Cetus 3D)

I realized this particular type of spool holder in order to make easier the extrusion. In this way the extrusion motor is less stressed because the bearings remove almost all the friction due to the spool rotation.

The bearings I used are quite easy to find, I took them from a fidget spinner, their specs are:
- bearings: 8mm x 22mm x 7mm