Just a simple model to create a single axel for the Eibos Cyclopes.  When printing from one spool, this will allow the other spool to spin too.  One issue is if the spool you are printing from is quite a bit lighter than the other spool, it may not have enough friction.  Adding heat shrink tubing or rubber tubing might help.

Printed in ABS as I'm primarily drying PETG.  This will be close to the heat source to materials will matter.  Printed standing up on a Bambu x1c with a decent brim.

I really only messed with this for a little while but figured I'd share in case anyone wants to try it or remix as necessary to get it to work better.