Hi,
Recently i bumped into a youtube video showing boiling water over rotating magnet disc which is spun by a/c motor.
Power consumption can be reduced since electricity isn't used to engerize the induction coil.
How to Boil Water with a Magnet
https://www.youtube.com/watch?v=Ua6brgZha-4 (https://www.youtube.com/watch?v=Ua6brgZha-4)
---------------------------------------
Suggestion for design improvement compared to the video.
Stainless steel cup can be used compared to using silicon glue.
Flat or half height A/C motor
disc covered with magnets