Definitely have to be on your toes.

It detects what is under the surface. Depth, topography, ext.

Jeff Loffert yes, craters are your enemy as well.

Jeff Loffert I have done both exhaust and coolant pipes without filler with excellect results. Fitup is key.

Have you tried autogenous welding?

I’m excited to see where this goes, really hope we get a lot of entries!

Nice cart Jeff!

Don't know anything about Rapidarc but it looks interesting. Care to share any more success/troubleshooting/issues you have had with it?

Welcome Rick. What tig welder did you get?

Happen to have any updates on this? It is situations like this that I started running a gas mixer and bottles of single gas. That way I am not locked down to any one mix of gas. Very likely this wire requires a spray transfer and can't get there with 75/25.