Economy knock box using a soup can

thingiverse

I realized that I could make a little rim with a bar to turn a soup can into a small knock box. That way, I can avoid emptying the filter directly into the trashcan, which has resulted in the filter falling out and having to be fished out of the trash.This is made for 86mm wide soup cans with a pull tab to open. Mine was a Progresso Soup, but I've also seen stewed tomatoes and other products with the same sized cans.