This guy makes a very interesting coil that could be made at home with a few parts.  It doesn’t take a scientist or physics student to make one of these its pretty easy.  Here is how this home experimenter describes this device:

In this video, I make a pancake coil for inductive heating the surface of parts that wouldn’t make sense to build a regular coil for. It can also be used for cooking. Induction cooktops are more efficient than a gas or electric stove because there is less wasted heat.

NOTE:  DO NOT TRY THIS WITHOUT THE SUPERVISION OF A PROFESSIONAL

It is called a pancake coil for the obvious reason that the shape and color somewhat resemble one 😉

Let’s watch this thing heat up in the video on page 2

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