Scalable Flat Spring Spool Hub

thingiverse

This remix of the spool hubs I use has some notable improvements. The new design fits more snugly and slides into the spool further than its predecessor, making it more secure. Additionally, they are significantly beefier and stronger, which is a welcome upgrade. Unfortunately, I've lost track of the original file, but I recall that previous version would sometimes break when trying to remove them from the bed, so let's just forget about those for now. In any case, these hubs do the job while using less material than many other options available.