Spool Holder

Hi there!

I recently got a free cabinet which perfectly fits my 3D Printer.
It also has a compartment for mounting filament rolls. All I needed
were proper mounts for the axles, which can be found in my other
project:

https://www.thingiverse.com/thing:2503185

I use the bulky spool holder that came with my Anet A8 along with
this spoolholder:

https://www.thingiverse.com/thing:1998669

The design is great, but needed a bigger diameter for this project,
so I did a small remix.

Beside the change of axle diameter to 10mm, I also added a little
more material around the axle. The new inner axle hole made the
thingy a little unstable (at least for my taste).

Please note that I did not readd a proper thread, as it would not
work well in my use case. Two spool holders are used with a 10mm nut
on each side, so the spool won´t move sideways on the axle and turning
the spool causes the axle to spin.

While printing the filament is unrolling and moving the s