Filament spool holder for Alfawise U20 (parametric)

From original thing:
https://www.thingiverse.com/thing:3183356

Spool holder's radius optimized to handle more bobine types (original one was too big to fit in some bobine spool holes).

This version also provides Fusion 360 parametric file.
It allows you to put different bobines (especially when bobine hole's radius is small)

The rest is exactaly like the original:

Quoting from the original thing:
"No bearing , no bolt needed
One part only
Very very rigid (maybe too much)
Good a