It all depends upon how room you have, the material (carbon, ally, stainless, Ti…) and the shape (flat, round, etc.). Welding is always a very personal technique how to get things done. There’s never a “right way” to do it. You got to achieve the results in any fashion required.
Even holding the torch is very different from person-to-person.
I use a #8 almost always unless I need larger for coverage or smaller for tight spaces. And I tend to use a mid-length back cap.
Even holding the torch is very different from person-to-person.
I use a #8 almost always unless I need larger for coverage or smaller for tight spaces. And I tend to use a mid-length back cap.