Designed to print in two parts and be glued together, this spool will get you through your first roll of 120 film and then you'll have one when you're done shooting all the photos. This is a blatant ripoff/adaptation of thing:44694 by Thingiverse user jakebot,
Needs NO support!
20 Clean out support in drive opening at ends
30 Glue with super glue
40 Shoot some awesome photos
50 Get a new spool from the roll of film you shot
60 Goto 40
I've gone as far as printing this and gluing it together, but I haven't actually shot a roll of film with one. I will post some pics asap.