[The Apprentice]

Here is my new Mk2 homemade induction heater that I put together for melting gold and silver for my hobby projects in the form of personal jewellery, some of which you have already seen.

The whole unit cost a little over a hundred pounds to make, she consists of a Cisco power supply the type used by computer servers giving sixty plus amp DC from a standard household supply, it uses 54 of those amps to drive the heater with a few amps to spare.

I altered the standard 9 turn 3/16" coil that came with it, to a six turn 1/4" copper coil for extra internal diameter and better cooling, which is driven by a standard pond pump submerged in a five gallon bucket of tap water, the black coating around the main coil is what they use in electric cookers 500 plus centigrade thermal protection.

She has a double layer crucible, the outer layer is a ceramic pot for complete safety in case the inner one fails and the inner a graphite melting crucible, when it is running you can touch the outer surface of the coil which is only warm to the touch, i runs pretty cool overall and is safer to run that a standard household cooker.

Here you see it melting three ounces of scrap silver i less than five minutes, the water in the tank never even gets luke warm even after 15 minuites run time.

https://odysee.com/@Shedlives:6/2019_0729_114359_003:5

Thanks for looking, if anyone wants to build one I can give all the links to the parts to do it.