/diy/ - Do It Yourself

I'm trying to build an induction furnace using an LC tank circuit with a target frequency of about 20 kHz. The guide I'm following doesn't list the magnetic permeability of the inductor cores used so I bought some with a value of 2500 and used 21 turns of 1.2mm copper wire. The capacitors are 470 nF each. About what frequency could I expect with this? I'm a noob at this so help is appreciated

Hello /ohm/
I'm recreating an induction furnace that I found on Youtube that claim to be able to induce 2000W into whatever is put into the coil. I am concerned how to deliver the power and how much might be too much. The MOSFETS of this circuit are rated for 60 Amps and I was thinking of using a server power supply or maybe 2 in a series. Would the current add to eachother and then be distributed through the 4 paths? This is my first electronics-related project so go easy on me