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Hi John,, Your wanting to use a process called scratch start Tig and is where you just barely touch the base metal to start the arc, like striking a match. It takes a light hand as you don't want to comtaminate the tungsten anymore than necessary to estabilsh the arc. To use that machine effectively then you need to use a dropper resistor made from a piece of 3/32" or 1/8" filler rod, depending on the amount of amps you want to drop. Attach the 1/8" filler rod to the welding bench with a vise-grip and let it hang vertical then attach the ground clamp to the other end of the filler rod. As the arc is established the filler rod (dropper resistor) will begin to heat thus lowering out-put amps at the torch. CAUTION as the filler rod can become cherry red dpending on the amount of amps being dropped. To adjust for the correct amount of amps required of the weldment, one could trim the filler rod to different lengths or change the diameter although I've never found this to be necessary. T_Bone
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