Much skillful photography, craftsmanship, video editing, etc by Fungusamungus
Step 1: Plot summary up to this point...
"Bicycle powered shredder" thought I. First I would try it by hand just to get a feel for it.
I had a crank handle from an astronaut-torturing machine that happened to fit over the shredder's drive shaft.
There was a hole for a retaining pin in the driveshaft. I drilled the crank to match, pounded in the pin, and Voila! Hand-cranked shredder.
Then I clamped it to a table and everyone started shredding documents until we couldn't find any more paper.
It all happened so fast I didn't take pictures of the steps, but your junk shredder and your crank will most likely
be totally different. Try a handle from an old meat grinder or a crank from a bicycle.
Hand shredding is so satisfying and convenient I don't know if I'll make the pedal grinder.
If you do it let me know how it turns out.
Next came the process of fitting it under a table in just the perfect way. Continue...