I found this on thingiverse the other day. I wanted to see how it would print on the Behemoth. The only way it can be made is on a 3d printer. It can’t be assembled or dissambled (at least without breaking it). It printed great and it was very easy to break the gears free and start rotating it. I ran it in a drill a little bit and it loosened up very nicely. I’m not sure how long they will last but I intend to use them in the smaller 1 pound spools.
You can see the results here