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The cutting method isn't going to have much of an effect because, as you noticed, the metal has a "natural" curve to it. That means you need to stretch the inner surface of your squares to match the outer surface. In order to do that, you have to actually stretch it slightly past the point of flatness. So, compressing it under a heavy thing won't work very well necessarily. With sheet metal, I'd suggest using something called a slip roller to introduce a complementary but opposite curve to the metal. However, since you're working with such lightweight stuff, you might be able to use some kind of pasta roller? Regardless, you should definitely do the flattening before you do the cutting. It'll reduce how much time you spend handling the metal, and you might find that the punch and scissors only introduce warping into the very edge, which is way easier to manage. edit: er, I mean after you cut the top and bottom off the can, obviously. I'm thinking of going from a curvy rectangle of metal to a nice flat one, then cutting it into nice squares.
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Jul 22, 2016 04:25
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| # ¿ May 21, 2024 08:32 |
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