What jeffreyg suggested above is precisely what this guy did for processing 50 foot lengths of super 8 film. He uses an outer pipe and an inner core, both made of PVC drain pipe.
You would be able to use the same outer pipe "tank" for all films, and just make a custom insert for each width of film you want to process. Just make sure the tubes and inserts are long enough to handle the longest length of film you want to process.
Assuming that we are talking about relatively short lengths of film (say, under 10 feet), you might also be able to make a film winding core that will fit inside a Jobo or similar film or print drum.
Last edited by SkipA; 07-28-2011 at 10:39 AM. Click to view previous post history.