IKEA Hack GRUNDTAL Spool Holder

I had an old towl holder from IKEA laying around and decided to make a wall mounted spool holder out of it. The GRUNDTAL comes in different variations. This one has four bars and costs about 20€.
I removed the second and fourth bar. The third (main) bar holds the spools, the first one stabilzes the rack. I plan on adding a filement guide to the front bar in the future.

To easily add and change spools, the main bar can be removed by lifting it up. To center the spools, I designed an adapter similar to the SAMLA hack:
SAMLA: https://www.thingiverse.com/thing:743280/
Spool Hub Adapter: https://www.thingiverse.com/thing:735213