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What type of material would be best, give the most resistance, for making a 2-3 inch rod that could heat up to 400 F.? Answered

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seandogue

8 years ago

By "rod", I will assume you don't mean a wire.

I'd suggest searching for "immersion heaters". Possible sources in the US and Canada would be Omega engineering and McMaster. They're not terribly expensive, although they'll need a temperature control to properly run them.

You might also consider modifying a soldering iron, since they "normally"operate well above 400 degrees and can probably be used with a bit of cleverness and a few extra components to reduce their effective temperature.

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7654321

8 years ago

I dont know about resistance, but graphite rods get very hot...

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yokozuna

8 years ago

Try searching for Nichrome wire. It comes in various gauges, and you'll need to figure out which size will work with your power source. I haven't had any luck finding it in hardware stores, you'll probably have to order it online.

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frollardyokozuna

Answer 8 years ago

and as Ideanator suggests - its REALLY easy to reappropriate from toasters and the like from used stuff stores for cheap.

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The Ideanator

8 years ago

Nichrome wire (found in toasters, hair dryers, heat guns, etc) or part of a stove element would probably work best for the heating element. A further suggestion would be to integrate a thermocouple on the element for temp feedback and some power MOSFETs to PWM the power to the element to control the temperature.