Adrian
It is possible to spot weld one side ie: single sided weld and the only difference is that a large earth is used as opposed to the clamp method you referred to previously,Basically all you do is clamp a large copper earth tag to somewhere nice and clean and place the other electrode on where you want the weld and pull the trigger. The one we use at full duty cycle will blow holes in three body panel skins no problem and when you pull the trigger the cables lift a few inches. Well known for blanking SIM cards and screwing up mobiles.
Cheers ALL
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