The original by PurchenZuPoden is brilliant! I'm changing all of my arbors to this style. Quick access to your spools and you don't have to worry about your bearings, and hardware falling all over the place.
Printed in both PLA and PETG and they work great.
The author remixed this model.
I remodeled this in FreeCad not because there was anything wrong with the original by PurchenZuPoden, but I wanted to be able to tweak little things about it. Tailored the length to fit in my tupperware spool holders.