Seen a video the other day of someone spot welding tabs on Nicad batteries to put them in a battery pack. Is there any way to make a welder into a spot welder??? I have a 200DX TIG All I could see in the video was they had 2 insulated copper rods the size of a pencil that they would make the spot welds with. I am guessing using a foot pedal. Maybe the TIG with custom leads.

Ideas where to start. Might be able to dig up some copper rods and get a couple extra cables for the 200DX. AC or DC polarity???