I am having some porosity and contamination in new TIG welds on an old gas welded fuselage.
Weld on the right was away from the old weld. The one on the left is picking up the edge of an old weld.
The fuselage was blasted, wire brushed, and cleaned with acetone. I'm using straight argon, ER80S-D2, and the same techniques as usual on 4130.
I wonder if the old weld filler is causing my problem and open to any ideas.
Yes, that's a hardware store bolt holding things in place while I tack it up.
Weld on the right was away from the old weld. The one on the left is picking up the edge of an old weld.
The fuselage was blasted, wire brushed, and cleaned with acetone. I'm using straight argon, ER80S-D2, and the same techniques as usual on 4130.
I wonder if the old weld filler is causing my problem and open to any ideas.
Yes, that's a hardware store bolt holding things in place while I tack it up.
