Turbell
Well-Known Member
Straight from the horse's mouth, so gap it is.I find having a gap gives more penetration with less heat so even though I use more power. Gives less distortion. Tig welding is different, Need the heat so no gap is good.
The clamps hold the position well too. The other issue is they gap tend to tighten as you tack it up so no gap can sometimes end up in an overlap at the other end. Can sometimes stretch a tack with a hammer and dolly.