Medium format: 135 format panoramas

A colleague printed the 3D plugs I had found online and I used them in my Pentax 67II medium format camera without a hitch. You have to set the camera to 220 format mode to allow the whole roll of 135 film to be used.

I got 17 negatives (6×7 format) out of the 36 negatives roll and could have easily got one or maybe two more if I had shot the frames before the counter reached 1 on the camera.
I used a change back to grab the film once it was finished and rolled it back into the capsule manually.