okay great. thanks for all the help!

would there be a better filler rod to use than the titanium filler rod? it welded to the bung great but did not stick to the exhaust.

i tried getting a titanium O2 sensor bung welded to my titanium exhaust for my motorcycle. the thickness of the exhaust is approximately 1mm the bung was approximately 5mm thick. the bung was titanium and i bought titanium filler rod. both ends of the exhaust were capped and the exhaust was filled w...

so what is the best practice to accomplish either?

does anyone have any experience in welding Titanium to Titanium? or stainless steel to Titanium? i have found very little information of either.