UP! Mini Spoolholder Reinforced

This is a reinforced version using a M4x30 screw in the center of the axle, so it should not be as prone to break as the original version. By not screwing it all the way in, you can adjust the angle of the axle towards the Mini-casing, so the spool is perfectly vertical.
I added a slot at the end of the axle and a little slotted locking-disc that prevents the spool from falling off the axle.
Printed and tested on my Mini, and it works very well. It was just a bit tricky to remove the support