How do you load 70mm film onto a 60mm developing reel

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A reliable developing reel made of durable ABS plastic, designed for the developing of 70mm roll Film., 90mm, 100mm, and 4.5 developing reels are

70mm developing reel

Cameras –

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Developing B&W film in Acufine at 85 Degrees

How to Load Stainless Film Reels

Developing B&W film in Acufine at 85 Degrees