I had tube in the vice with the clamp on it. Was a top tube
I had a seat stay that I tried to weld to it.
I was holding it in my leather welding glove. Half way along the tube.
With the clamp at one end of the top tube.
The weld built up on the seat stay...thought it would go to the top tube.
If not cause of the electric earth being there...it was also below...so gravity.