External spool holder/roller (no hardware)

I found that printing with tpu is very annoying if you use the normal spool holder, so I designed this to place it on the side of the printer. It was also pretty annoying to find one because for some reason a bunch of them say no hardware and then it says you need some bearings and screws. So absolutely no hardware for this because I hate buying stuff and having a bunch of extras lying around.

Credits for the ball bearing goes to this guy: https://makerworld.com/en/@Jerryie 

link: https://makerworld.com/en/models/34145-print-in-place-ball-bearings?from=search#profileId-307927 

If you want to use a different bearing, just use a 608 bearing and make sure to add a 8.4mm hole in the middle so that it fits good.

(I used 608 loose.)

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