122 to 120 size film spool adapter

thingiverse

Adapter plugs designed to convert old cameras meant for 122 size film reels into compatible units accepting 120 Size film stock (example: Kodak 3-A folding autographic brownie camera). The process requires a 90% high infill print, which allows the plug's tongue to be adequately reinforced. Depending on your printer's precision level, some fine-tuning by means of filing may be required, specifically for areas where overhang occurs. Aim for a snug fit without overly straining. To produce the desired result, enable supports during the printing process exclusively at keyway sites. However, depending on your printer's accuracy, this might not always be necessary in such instances. The plug design has undergone rigorous testing and been confirmed to function flawlessly with Kodak and Ilford film reels, demonstrating adaptability and a seamless interface when combined with these spool designs.