Skadis thread & bobbin hooks for industrial spools

I couldn't find any proper hooks on here that would fit all my industrial thread spools so I designed these in a shape that allows the wider bases to sit properly and not fall right off. I also added a top nub that supports the back of the hook once it's installed because the normal thread ones I tried from here would pop off every other time I took a spool off.

There are 3 sizes and I'd recommend the “Low” hooks for any of the 4-8oz spools such as the Amann Serafil spools if you're looking to fit them all closer together. They fit on all hooks though, so configure how you like. The “high” hooks help if you're going to be putting 8-16oz spools on them. Lower hooks still work but they'll have to be printed in strong material because a 1lb spool is pretty heavy at that kind of leverage.

The 3mf file is set to concentric fill at 95% which seemed like the best option for durability, but feel free to play with it. The profile also is set to a 0.6mm nozzle on “Fine” setting so feel free to change if needed. The clip side had some adhesion problems a few times but with a clean surface and especially with glue it seems fine. Adding a couple brims may help you out if your printer normally has adhesion problems.