This inquiry is not a “what is wrong with my press” but more a “how do I restore my cutter” question. I recently purchased a 19″ Challenge guillotine paper cutter that resided in a garage for the last few years. I have managed to remove much of the grime, grease and dirt but the rust remains!
I would like to avoid using really strong solvents to remove the rust any suggestions would be most appreciated before I have to go toe to toe with this metal goliath again because so far as the points stand it’s Challenge cutter 2 points, me zero.
Soak the metal in vinegar. It’s smelly but works. I’d mix 1 part vinegar to 1 part water (more concentrated works faster, but then you have to buy a lot more vinegar!). The acid (acetic acid) will react with the rust and float to the surface of the liquid. If you don’t have a container large enough for soaking, vinegar-dipped rags will work, although not as well.
You can also rub a cut lemon on the metal (citric acid), but this will leave a slightly sticky film that you’ll need to wipe off later. Good luck!