35mm Film on 120 Spool

youmagine

UPDATES 10/23/14 - Added matching takeup spool http://www.youmagine.com/designs/120-takeup-spool-for-35mm-film 10/7/14 - Added a combined STL file 7/6/14 - I've added a PDF Read Me guide to using the adapter 6/16/14 - updated files to improve fit and reduce friction. May be loose on some commercial canisters but will now fit CineStill film and possibly Kalt. Print using 50% infill. Tested and working. This adapts 35mm film canisters to work as a 120 format spool, allowing shooting 35mm film in any 120 medium format camera. The 35mm film is centered on the 120 spool. Using this adapter lets you use films that are not available in 120 format, and the entire 35mm film is exposed, resulting in unique images out to the edges, sprocket holes included. See http://www.youmagine.com/designs/120-takeup-spool-for-35mm-film for the matching takeup spool. Don't force adapters on. Make sure splines are aligned and if tight, trim or sand them carefully, or wiggle them on gently. The splines may need to be trimmed to fit Kalt bulk loading canisters and some others. Tape over the hole for viewing film numbers (usually a red window) on the camera with black gaffer's tape or suitable opaque tape to avoid back side exposure of the film. You will need to wind about 1-1/2 turns at the beginning and taper down to 1-1/4 turn at the end. Most medium format cameras have no rewind, so you will need to unload the film in a darkroom or changing bag and manually rewind the 35mm film back into its canister. When processing, specify "process only" and "do not cut" and cut the film yourself. These adapters were designed for the Flyer 6x6 camera developed as a result of the Pinhole Printed Kickstarter project (pinholeprinted.com) but can be used in any 120 medium format camera. The combined STL file is printed as is. If using individual parts, print the bottom STL part as is and rotate the top STL part 180 degrees about X or Y to sit flat on the bed for printing. Now recommending 50% infill due to small cross-section of splines. If you don't have a 3D printer or it's tied up with other things, check http://www.pinholeprinted.com/order/35mm-film-to-120-spool-adapter/ for alternatives. This is CC by SA 3.0 - anyone can freely print or sell adapters but must provide attribution if doing so. You can print a tag with this information: 35mm Film on 120 Spool by coconnor55 Published May 2, 2014 https://www.youmagine.com/designs/35mm-film-on-120-spool Creative Commons - Attribution - Share Alike