Filament Dryer / Dehydrator spool roller / spool holder

There are many versions and remixes of this type of roller. This one is remixed from: https://www.thingiverse.com/thing:2693565.

I wanted to be able to print certain filaments while the filament spool resides in the dryer / dehydrator; this can be handy for very hygroscopic filaments like nylon. This remix is such that the filament roller fits inside my filament dryer / dehydrator while still being able to handle 1kg spools.

The original design is modified such that the filament roller bas