I bought one of the stud welders recently. Welded over 200 studs in 3 days without a problem and on the end of an extension cord that was just above the minimum size required.
The only problem was the replacement studs. The ones that came with the unit were great, soft material for easy bending and perfectly formed heads welded great. The ones HF sells are crap. Hard as rocks and heads like blobs. Had to order studs from a name brand company.
