Doublt if I have any buisness putting my 2 cents / nose in this, considering the kind of talent present. We have had trouble with this before.....and after several E mails to RWTF RE welding, we started getting serious about the CLEAN part. Now, my buddy Joe, who has the Linclon precision TIG, and is a hell of a welder - (get a 6 pack of Bud in him and he is steady enough to weld the lid back on to a snuff can), is sold on the 3 1/2% nickel rod form Brownells. Me too. When we started trying really hard to keep it CLEAN, the pinholes and inclusions went away, and there has been no problems with the blueing - be it hot salts or rust blue. Like so many things ... attention to detail. And CLEAN. Works for us rookies.
As always, hoping this finds everyone well;
Kraft
