Film Drying Chamber for '800T' Film
Description
FOR USE IN CREATING 'C*NESTILL 800T'-LIKE FILM FROM KODAK VISION3 MOTION PICTURE FILM. NO DARKROOM REQUIRED. This is my design for a simple daylight film drying chamber that simplifies the process for making 800t film by eliminating the need for a darkroom. This is used in the process of removing the carbon-backing layer on motion picture film like Kodak Vision3 500T, and serves to act as a daylight film drying rack before the film is reloaded into the canister to shoot. TO CREATE: Print 2x Cone, DoubleSwitchTrap, and LightTrapTop Everything else can just be printed once. Superglue the lighttraptop's onto the doubleswitchtrap's. This is the lighttrap for each end of the film chamber. Glue the wide opening of the cone to the other side of the doubleswitchtrap, leaving the circular opening of the lighttraptop untouched. The narrow part of the cone on one lighttrap can then be glued to the bottom of the film chamber, ensuring that the openings line up. Do the same on the other half with the cone, except now glue on the chamber cap to the narrow part of the cone. Finally, glue the fan lip now to the circular opening of the top light trap, where you can then mount a 60mm fan. The design fits 2 Patterson 35mm film reels, or 1 120mm film reel (Although I'm not sure if vision3 stock is sold in medium format). Nevertheless, this drying chamber features not one, but two light-seals at each end, so air can flow from the bottom up through the reels and out through the fan, increasing drying rate and decreasing the risk of water spots on the film surface. The fan designed to fit over the top end is mounted in a pull configuration, drawing moist air from inside the film chamber out. Any 60mm fan can be used, and screwed into the m3 holes at the top. Assembly can be done using only superglue, as long as emphasis is placed on sealing the light trap lids onto the light trap itself. Working on a YT video rn of the whole process, will update later. The process is also written down below to create my working 800t film if you're interested: 1. Load 36 exposures worth of vision3 500t cinema film onto the film reels in a darkbag. I did this by using a bulk loader (you can 3d print one here! https://www.thingiverse.com/thing:4551262) and rolling out the exposures into a canister. Then, unroll it onto a reel much like you would do for self developing. Do this 2x if you want to process 2 rolls into 800t. 2. Mix 100ml of baking soda and 30ml of soda ash (sodium carbonate) into 1.3 liters of water HOT water (100+ F), this is prebath formula i used which seems to remove 100% of the remjet no problem. Place the reels into a development tank via darkbag, and then pour the prebath into the dank and shake for about 30 seconds with the lid on, burping it as you go. 3. Then, pour out the prebath back into a bottle for reuse later. Most likely, you should see the water is now stained with dyes from the film. Fill tank with plain hot water and shake hard for a few seconds, rinsing it out, and repeating 2-3x. This time, pouring out into the sink you should notice a ton of black particles in the water. Pour the prebath back in to the dev tank and repeat this step one more time to get as much carbon off the film as you can. Wash with hot water throughly. 4. Place the dev tank with the reels and the drying chamber together into a darkbag. This should fit with some difficulty in a medium darkbag just fine. Transfer the reels into the drying chamber, and twist it closed. Remove from darkbag. 5. Turn on the fan, and let film dry for at least 3-4 hours. Then put the chamber inside the darkbag, and spool it back into the film canisters using scotch tape, leaving some out at the end. Voila! 800T film, and now you can bulkload this whenever you'd like for a fraction of the price!
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