A "One Size For All" (almost?) Spool Roller, using 624zz bearings.

As I have now three size of spools, I finally rejoined the meme of using two separate bases in order to fit any width of spool :)

Print two. Add for each : 4 624zz bearing 2 M4x25 bolt 2 M4 nut 4 M4 washer

For the 603 model use M3 bolt/nut/washer instead

For the 623zz model use : 2 M3x20 bolt 2 M3 nut