Induction bolt heater - worth it?

[alwaysFlOoReD]

Ya know. The whole idea behind the induction heater is that the coil is NOT a resistance heater made of nichrome. It works by inducing eddy currents in the metal you stick in the center. Tje eddy currents react with the natural resistance of the material itself to create heat. The coil itself is very effective made of copper.

No, I didn't know that. Interesting. Another rabbit hole to go down...
I happen to have a lot of copper I'm going to scrap soon. Any particular type to keep? Also brass and S.S.

 

[pjtoledo]

before you get too deep in the hole research the frequency induction heaters work at.
I doubt it's 60 cycles because there aren't too many glowing transformers.

off to wiki we go!

 

[Curious Hound]

before you get too deep in the hole research the frequency induction heaters work at.
I doubt it's 60 cycles because there aren't too many glowing transformers.

off to wiki we go!

More efficient at higher frequencies.

Inductive reactance (basically the strength of the magnetic field) is dependent on the inductance of the coil "L" (influenced by the size of the wire and number of turns in the coil) and the frequency.

2 × pi × Freq × L

 

[alwaysFlOoReD]

Probably over my pay grade...

ChatGPT sez...