Thanks for this model! I printed these so I could put my 250g sunlu spool into a Sunlu S1 Plus filament dryer. It worked out great!

I did have a similar problem to what another person said: one side was loose and that has been true of all the spools I've tried. From what I can tell though, it looks to me like the issue is with the sunlu spool and not the model--I think the sunlu spools are slightly larger diameter on one side than the other. I tried confirmed this with some calipers too and the difference was only like 0.4 mm. It would be amazing to adapt this model somehow to compensate for situations like that.

Even with that, this model still worked for what I needed. Thanks!