all you need is sandpaper, a knife and some brute force
Step 1: Getting some backround info
I wanted to use it to take some pictures; its an awesome camera that supposedly kicks out high-res shots. So after going to a camera store, i found out that the film it uses (620) hasn't been made for 30 years. Knockoff film is available, but its expensive (20$ for 1 roll of like 8-10 pictures, + the cost of developing = ridiculous)
I found a guide online for 're-spooling 120 film onto 620 spools, although this looked like a quick alternative, i found out it was nearly impossible, as it involves moving things around in the dark, without touching the film. I attempted doing it in the daylight on exposed film, and i failed miserably.
Then i realized, the only reason it was necessary to 're-spool' was that the spools were slightly larger than 620's . Thanks evil corporations.
The camera's are pretty much useless without the film, so if you break something, chances are no one was going to use it again anyway.