Great looking welds on the posts!!
They are flat head stainless steel screws with a diameter of 0.098". I tacked each one with one probe on the tip of the screw and the other probe grounded to the box. They became red hot at 16V with a first pulse at 6Ms and the second pulse at 22Ms. I lowered the pulse width and placed the probe on the head of the screw and gave each one 3 welds.
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