[michaelbsc]

I agree, but why would you NEED to print numbers? ...

My RB67, P6 TL, and several TLRs do index the film without numbers.

But the folders and box cameras all have a window.

And I *LIKE* my Mother's Brownie Hawkeye.

I do agree that sheet film is a lot easier. And even at the width of 120 I have a bunch of 2.35x3.25 holders.

Plus i have a stash (No! It's not a hoard!) of glass window panes. So I too would probably try very little roll film.

When I think about the possibility of home manufacturer I invariably think small scale, dozens instead of thousands. The investment to make occasional new backing paper seems trivial compared to a perforating machine. Unless you can get or fabricate the perfing machine vey inexpensively.

For a small manufacturing operation, say 5K rolls of film, a usable perfing machine begins to make sense. And you could sell the film packed in a wrapper for the user to spool. Eschewing the cassettes.

I have some oddball FSU film in my freezer which is packed this way. It's just a strip of perforated 35mm film. The user had to load it in a cassette.

Some of the old Contax cameras had a refillable cassette.

MB