well i have noticed some interesting things about electricity since fooling with joulthiefs. im sure anyone who has played with them noticed that hv low amp seems to power devices with less watts consumed than that device was rated for. this i believe has applied to lights thus far.

now the joule thief could be "reversed" and instead of creating a high frequency high voltage low amp current for lights (the most effecient for lighting) perhaps for heating we will find its high frequency low voltage high amperage thats most effecient. i believe using a tesla bifiliar wound coil as the pickup should achieve this easily, especially if the primary and trigger are double the windings.

i found that bifiliar coils if powered create a higher magnetic field and higher voltage (if collected by a regular coil)  but if operated in reverse they create high amps. its rather interesting. as if the increased magnetic field produced wasnt interesting enough.  i believe its been proven that amps creates heat in the "resistance" style heaters such as metal filiments or ceramics even quartz and that the voltage has less (if any) importance here like with lights.

The right frequency will do the most good considering if the frequency is right you can heat metal in seconds through a induced magnetic field.  i believe its called induction heating/welding.

hmm much testing needs to be done.

guess ill start fooling around with with the classic 3 coil joule with the bifiliar pickup on a ceramic heater element. perhaps a touch of tesla with the air core for higher frequencies and maybe a 4th coil in resonance would help.

The 1/8" has to be (exactly) 1/8"
Oil (not water) has to be between the pan walls,
but not filling up inner pan.  My sources swear it works.
Both pans should be of the same metal I think.