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 spool along
with the axle and the nuts. There is no bearing required.

Speaking of bearings: I have the feeling that bearings on a spool holder
are a bad idea in any way, as they may just cause uncontrolled unrolling
on fast print stops or if you intentional pull filament when loading the
extruder. In the end I would add breaks to the holder :D

This is just a simple and "clean" solution that works for me. Maybe it
has some use for others, too.

Many thanks to Jorge Pi (https://www.thingiverse.com/jorgepi/) for the
initial design.

Happy Printing.