The process involves removing the film from its canister, running it through a dishwasher cycle, leaving it for a couple of days, blowdrying it in a dark room, and then rolling it back up and shooting.
He cautions against passing them through a commercial lab, though, since the added chemicals could mess up its developing solutions. So if you want to attempt a similar experiment, keep it DIY all the way. [Tom Welland via PetaPixel]
Photos: Tom Welland