Induction furnace

induction furnace

[Tim Williams] made his own induction furnace. A copper tubing coil forms the primary winding, as the material to be heated becomes the short circuited secondary. The load material is subject to high power magnetic fields operating at radio frequency. The rapidly changing field induces current flow within the material, creating a great deal of heat. The brute power required a cooling system to match. In the video below, the induction furnace can be seen melting common table salt.


  1. Satiagraha says:

    Good to finally see some of Sch3matic’s projects on here. He’s certainly capable enough to be a hack-a-day’er :D

  2. Etan says:

    Wow – crank it up.

  3. ro says:

    he sounds like dwight from the office

    cool project..

  4. TMH says:

    Looks like something you’d find in the unabomber’s shack or a drug maker.

  5. aztraph says:

    This gent is a true engineer, I haven’t seen an understanding of electronic principal like his in 20 years, puts me to shame. love the attention to the nit picky little details.

  6. Taehl says:

    Hot! Quite literally, too!

  7. bjonnh says:

    Is the salt used in the video Potassium Chloride or Sodium Chloride ? I see he tried both

    This project is wonderful ! A complete work with precise explanations. Great work man!

  8. NICE HACK… this is what Hack-a-day is all about!

  9. adamziegler says:

    Great job Tim… if anyone is interested, I think Tim is looking for people to help test prototypes:

  10. adamziegler says:

    (you can also find Tim here: irc:// #thefoundry )

  11. liebesiech says:

    Looks like a product who can put to market as it is :-) Good hack!!

  12. Kabuki says:

    Hahaha! Tim! This is great! You’ve been working on this furnace for what three years or so? I’m so impressed by how far it has come! Great job man!

  13. static says:

    Oh my! I believe I’ll stick with old fashion fire. :) Though it was interesting read about the project. Thanks to the Designer/author for documenting and posting it to the web.

  14. vitim says:

    lab of my dreams…

  15. Universal Turing Machine says:

    i wonder what that huge inductor will do to his power factor

  16. Drew says:

    This is SWEET- in the video, it’s at 1500 Degrees. Can he make this thing get up to 5,000 Degrees F? I’d love to make my own crystal melting furnace by adapting his work here, as I can’t afford a commercial unit, being a tinkerer. I’m talking about melting ruby to make my own bearings. Any ideas?

    Sentiments seconded from others- this is an INCREDIBLE hack, monumental. These things can practically melt anything, and are complex as hell, or so I’d thought- I never imagined I’d ever see someone make their own. This is absolutely incredible!

  17. mike says:

    i’m sorry, maybe i’m seeing things. is the power supplied by AA batteries?? O.o

  18. ALI says:

    I base this on my CD4011 and LM393-324 to help guide the agency in the map right here I do not know what I base my vessels to which wire on the map

  19. Russell says:

    That’s great. Is it piratical to use an induction heater to heat your home

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