If operating from the mains is acceptable, then yes the stick welder solution is the way to go. You can buy old hobby welders on ebay for as little as
£10, the current is adjustable and the AC will burn the two electrodes evenly.
The wiring up three server power supplies in series is potentially difficult because to avoid revers biasing the input of any one off them you need
series diodes between them and in parallel across each one. The diodes can cost more than the power supplies. However four of them will make a nice
supply for a milti kilowatt induction heater.
I am wg48 but not on my usual pc hence the temp handle.
Thank goodness for Fleming and the fungi.
Old codger' lives matters, wear a mask and help save them.
Be aware of demagoguery, keep your frontal lobes fully engaged.
I don't know who invented mRNA vaccines but they should get a fancy medal and I hope they made a shed load of money from it.
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