Sharpening a Paper Shredder?

I've heard that running a sheet of sandpaper through will put an edge on the rotating blades.

Anybody know if this is true, if not is there an alternate method?

spacemissing2012-10-11T17:21:21Z

Favorite Answer

Sandpaper will dull the edges, not sharpen them.

Replace the blades or the entire shredder.