I don't see why you couldn't use it, though you may have to get creative with the film. The spring-driven advance mechanism can be an issue.
On 126, a pin goes into an index-hole in the film, which stops the advance. If the pin lines up with the 35mm film sprocket holes it will stop after moving a tiny bit - but you could experiment to see how many times to fire the shutter in order to get the right frame spacing. It won't be perfect, and after figuring it out, you'd have to cover the lens each time you did this.
At one time I'd found a bulk roll of unperforated color 35mm film and used a hole punch and "jig" to create indexing holes. You might also find unperforated microfilm, or slit 120 to size.
I taped over the window on the 126 cartridge and did not use backing paper - opting to count shots (post-it note on back of camera).
Also, Ilford's yearly special format run of B&W film often includes an unperforated 35mm bulk-roll of film.
The question is whether it is worth it for you. I enjoy doing it occasionally so I can use my grandmother's Minolta Autopak and my Father's Kodak Instamatic 414.
Here are some previous threads on reloading the cartridges - I think you may have participated in some:
I had purchased a Keystone K 1020 SLR Reflex in pretty good condition from a vintage retail store a few years ago. It came with an empty roll of 126 film with its label removed. Is it difficult to get a hold of this type of film or it possible to convert a roll of 35mm film to work with it so I...
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Hello all, This is my first post here on Photrio, however I have been lurking here for a few years. I'm a senior year industrial design student and have been shooting, developing, and experimenting with film for a little over 2 years. I'm always looking for new photography projects so I've...
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It would seem that filing down the indexing pin on a 126 camera for 35mm use would totally solve the "perforated vs unperforated vs unperforated w/ strateg- ically punched holes" question. One would just file down the pin, then use whatever 35mm film one wanted to. (Of course, advancing the...
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I can't find any recent posts concerning this. I've been trying to find some to reload for my Kodak 500 Instamatic. I've been working through a dozen rolls of wonderful HR100 fuji and saving the 126 cartridges and backing paper to reload. I've seen color film (Portra and Konica) but the only bw...
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