I have a theoretical design for a film slitter that would cut 120 film into 9.2mm appropriate for a Minox. Any advise? Thanks best, -R
Build one and see if it works. Some people might be interested in buying it. However, "don't quit your day job" is right. Any minox film slitter is about as much of a niche product as you can get, and one that turns a moderately uncommon film format into a less-common one is even more so.