These handy little plastic adapters will allow you to use any 35mm film in your 120 (medium format) camera! This gives you greater creative choice as there are many more emulsions available in 35mm size, and it also allows you to shoot over the sprocket holes of the film for a special final image.

Cut perfectly to the right size, you simply attach one to the top of your film, one to the bottom and place it in your camera where you'd normally load the 120 film. Wrap the tongue around a take-up spool as usual - but just remember that when you come to the end of your film you must rewind it back into the 35mm canister.

Please note that final colours may vary

How to use

1. Tape over the red film number window (on the back of nearly every 120 camera) with opaque black tape so the film is not exposed through there
2. Start the film by bending the leader over flat to put in a crease. Insert into the take-up spool and wind 4 turns. Close the camera and wind another 2 turns to get fresh film in place
3. The film must be blindly advanced about 1-1/2 turn of the knob after each picture (for 6x6, more for 6x9 or other formats). If the knob can spring back, you may need to put a rubber band over the knob so it doesn’t unwind itself between shots
4. Most 120 cameras do not have a rewind knob. This means that once loaded, the film can be shot until the end of the film is reached and the advance knob stops. At this point, you need to use a darkroom or changing bag to open the camera and manually rewind the film back into the canister (the adapter makes a convenient rewind knob)
5. When you take or send the film in, you must request “process only” and “do not cut”

As written by the creator 

Printed specially for Analogue Wonderland with, these adapters were designed by Clint O’Connor (coconnor55), released under CC by SA 3.0 and posted on Thingiverse (thing:323120).