Get a Bi-Metal cutting blade for a jig saw and it will cut it and go slow with some lubrication on the blade. Or if you can finde a carbide tiped jig saw blade. But your better off with a stainless plate.I have a piece of 1/4 inch carbon steel which measures 4 inches by 12 inches and I would like to make a slingshot out of it. Any suggestions?
Polish it, have it hot-blued by a gunsmith. Then thoroughly degrease it, and apply a high-quality car polish. You should probably repeat the polish every six months or so, depending on how much you shoot it. I treated my Taurus revolver that way 15 years ago and it has never developed a spot of rust. I used Formula 2000 polish.I will trace an outline on the metal and then drill a series of holes all the way around the inside and outside of the outline, Then I play connect the dots with a hacksaw and file it smooth. It will take a long time to finish. I was wondering about rust, after all it is carbon steel purchsed at one of the big bos hardware stores. I was thinking about coating it with one of the epoxy paints in some strange color like pink. If I can figure out how to bond a couple of pieces of wood to it that would work well also.