this post was submitted on 23 Nov 2023
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How long did you keep the nail on the battery for?
A 9V battery can be used as a foam cutter.
Styrofoam and most art foams melt at about 200°C
https://youtu.be/4Hj9PJstexk?si=_NEMZZU4Yu_CSN0a
About 10-20s, I left it on until it didn't seem to be getting much hotter. I also didn't want the battery to overheat and fail catastrophically. I think because the "wire" is such a high gauge, there's not enough current for it to get seriously hot. In a foam cutter, you're passing all that current through a much smaller cross-sectional area.
Here is an alternative Piped link(s):
https://piped.video/4Hj9PJstexk?si=_NEMZZU4Yu_CSN0a
Piped is a privacy-respecting open-source alternative frontend to YouTube.
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