Blind Rivet Axles Spool Holder

Spool holder using blind rivets or 1.75mm filaments as axles
This is a spool holder design for Geeetech I3 Pro B with Acrylic 8mm frame.

Though there are many spool holder designs, this particular one is different by the fact that it doesn't use ball-bearings (as the vast majority do) and instead it uses blind rivets as bushings and for the axle it can use either the rivet mandrel (rivet stem) or a piece of 1.75mm filament (PLA, ABS, ...)

The rivets are easier to get than ball-bearings an