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Nichrome wire won't heat even with a car battery. Answered

I have some very thin nichrome wire that I pulled out of an aquarium heater. I think its about as thin as the smallest wire on an acustic guitar. I'm trying to use it to cut foam for an rc plane but it just won't heat up enough. I'm trying to heat up a good 20 inches of wire so its quite a lot, but I thought for sure a car battery would handle the job. Right now it barely gets warm, I can leave my hand on it indefinitely without it feeling hot.

Should I just strip a power cord and plug it straight into a wall socket? Also do I need a thicker wire? I know a thicker wire would take more to heat up, but this thin wire breaks easy so I'm unsure if it will be able to withstand tension when it actually gets hot.

I really don't want to have to order a bunch of crap to start working on this plane but I guess if I absolutely HAVE to then I will.


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2 years ago

I just hooked up two car batteries instead so now it works