I got a rust free second hand door which doesn't fit very well, and have seen on here that welding a length of welding rod to the door edge can solve the problem.
After looking on eBay, I see that mild steel TIG welding rods, (I assume it's these that I need) seem to be copper plated. Will this make it difficult to stick to the existing sheet metal, or am I looking at the wrong type of welding rods? Also they seem to come in different thicknesses. Is it best to get a thicker rod than the gap and grind back to the required thickness?
I can't imagine that MIG welding a thin welding rod to the door edge freehand is too easy, so would some sort of jig be useful to hold the rod in alignment during welding. (Say a piece of angle)?
Grateful for any help on this.