I seem to have more fun making photography related gizmos, than actually taking pictures. Making a splitter is really easy. You can then use any type film that comes in the 120 format. I understand that some 16mm cameras require a perforation to operate properly. The Minolta works fine without them. The splitter that Goathill sells is probably hundreds of times better than what I've made here. I used parquet wood flooring. Two pieces together, a razor blade, two more pieces, another razor, etc, etc. Then I added two wood side-rails. I'm sure it will evolve over time.