This video features uphill stick welding using both ESAB and Hobart 7018 Electrodes at 1/8".
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I started off using 120 amps for the first stringer bead and then reduced amperage to 115 once the metal was warmed up. After a total of 6 passes, I did a cut and etch test to reveal the depth of penetration and internal quality of the multi-pass weld. Naval Jelly rust remover can be used for this test also but I used a solution designed for passivation and heat tint removal on stainless steel.
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3 авг 2020