Idahoan Dean Williams used to make a living by repairing vintage mechanical cameras. If you’ve ever pulled your hair out trying to replace a small spring that hasn’t been manufactured since the factory was bombed by Göring’s Luftwaffe, you may be interested in his well-documented DIY method. Dean’s trick for annealing them inside a wad of steel wool in a toaster oven is worth a click all by itself. His entire site, in fact, will likely be of interest to those who appreciate close mechanical work.

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How-To: Make Springs