Modifying wire speed on little MIG welder

I just modified my Harbor Freight gas/flux welder to make the wire feed speed control more useful: It had been very fast even when turned far down. From what I found out analyzing the circuit, I think what I did would work on many HF models and quite possibly other cheap imports. So I wrote it up and put it at my website, at

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Wilson

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Robert L Wilson
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Good analysis, Bob. I don't have the welder, but printed the PDF just in case one follows me home sometime.

So, what is the wattage of your new R9? 1/4 watt?

Paul in Central Oregon

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co_farmer

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RoyJ

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