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Trying to understand the math involved. For the odd thick plate job, debating on trying this at half the rated duty cycle. Specs on the princess auto buzz box are 22v out at 120v in. If powering with 240V, it would theoretically be 44v, but how many amps would depend on the rod/load i assume...

homesteading in the boonies of north alberta.

The "amp" setting on these cheap IGBT machines seems to be less actual amps and more a linear % of full power. IE my machine went up to "200" (actually about 150A measured with a DC clamp meter) but 200 on 120v AC supply (75a actual) is about the same as 100 (of 200) on 240v AC supply.

Interesting. I wonder if that and graphite gouging rod would be good for blowing out crap welds at inside corners. I tried using the TIG mode at full amps with the gouging rod and got up to like 2" arcs all over the place, gouging nikola tesla style, except the for the DC thing...

A transformer based unit also uses more power (wasted in the TX as heat), but no capacitors to dry out over the years. If I had access to a tombstone buzz box, I'd open it up and put in a $20 aliexpress 200A heavy duty rectifier/heatsink and 24v fan and quick connect females. Maybe a pair on...

From what I comprehended, arc force is hotter voltage? and hot start is max amps when striking, then ramped down to set amps?

I heard preheating is crucial, and cool slowly.

Wow, this thread went off topic quickly. Regarding chinese lunchbox plasma cutters: I bought a $200CA "S7 50Amp Non-Touch Pilot Air Plasma Cutter 110V / 220V Dual Voltage Inverter DC Digital Display IGBT Portable Cutting Machine" Worked ok on 240v, until it let out the magic smoke after what...