My first job out of high school was working in a warehouse.
I said WAREHOUSE ... for those of you who know me and think I misspelled ... :roll:
Ennnnny-wayyyyy ... Found out quickly that a day of cutting heavy cardboard boxes put a hone on a blade that was incredible. I still use that trick today at work.
Once in a while a new computer or printer comes in and the box is thrown away. I take the opportunity to make long cuts with my Victorinox Swiss Army pocket knife.
Wow! By the time the box is cut up, the blade is back to its razor-sharp self.
Enjoyed the post about the top of the auto window. I'll have to try that.
I knew a guy that used to sharpen his knife on the heavy, denim fold over his zipper. Kinda lost track of him after he joined the Vienna Boy's Choir .... heh.