"Stuart & Kathryn Fields" wrote

Thanks Rich: That coroborates all the stuf I found thru digging thru
University research papers, certified welding instructors, Metalurgical
studies and a bunch of writings of people like you and the EAA tech
counselor. All that said, I have an IA friend that still insists on the
OA " normalizing" or "stress relieving" after a TIG weld. However, not on
my helicopter.

So, do you think that the tig welding does not induce the stresses, and
therefore not need the quick OA "stress relieving" or what? I'm interested
in the reasons you came to this conclusion.

I may need to make cromolly engine mount, but the rest of my dreambuilt
airplane will not require any normalizing.

I hear wood airplanes do very poorly with an OA torch held at their
"clusters." ;-)
--
Jim in NC