Universal spool holder for Prusa Mini (modification of the original one)

Sometimes I buy small spools so I can try a new filament without committing to the full 1kg spool.

The original spool holder that comes with the Prusa Mini does not work properly with this smaller footprint of spool.

That is why I've modified the original design to make it a bit shorter.
The good news is that you can re-use the rails, screws, bearings… you only need to print 4 pieces of this model to replace the original ones and you are good to go. It works perfectly with regular 1kg spools and the smaller 300gr.

It would be great if Prusa would ship this one, they would save on filament because it is smaller and it works perfectly with both types of spools.