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What I'm hoping will work - I scrounged a carbon pile from an old VAT 40 battery tester. It's a variable resistance capable of up to 400 Amps.
Essentially it's a stack of carbon plates on top of one another. Current flows through the plates. A screw with a knob presses the plates together. Light pressure gives relatively high resistance, increase the pressure resistance goes down.
It's the load used on some battery testers.
I'll hook it in series with the RW output - on the output's ground side. It should cut down on the current by the added resistance when welding, but since there's 0 current draw when open circuit the voltage across the electrodes should be high - for starting. Once it starts, the amperage will drop.
Once it lights you could adjust the carbon pile up or down to where you like it.
Well, hopefully that'll be what happens.
My concern is it may get really HOT!
I'll post it when I try it.
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