A foam cutter built like a coping saw but held parallel to ... can be made in minutes with items on hand. Laptop chargers are full of 18650s, and nichrome wire can be sourced from old toasters ...
everything from tiny hand-held cutters to a hot-wire “table saw” for foam. We like the effort put into this one, though, and the possibilities it opens up. Thanks to [Keith O.] for the tip.
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