I don't really claim to be a good welder, but I just weld them closed and then grind the weld back down to flush with the panel.
do you use the copper to absorb the heat away from the metal?dartracer said:Use a little bit of plummers putty around the hole to keep it from warping. Then get a piece of copper and brace it behind the hole and weld it up.
cool i will give it a try this is the first i have heard of this technique tnkujamesdart said:i use the copper, i got some 2" copper pipe off a job, annealed it so it is soft and bendable by hand, sliced it opened it up and hammered it flat. you use the copper as a backing, steel welds dont stick to copper, plus copper takes much more heat to melt, it also takes some of the heat from the weld. start on the copper in the center and just plug it up, as soon as you stop, lift your welding hood and blow it off for a few seconds with an air hose. until the weld is cool.