All of this work is exhausting!
I had some more welding done on my catalytic converter heat shield. These welds warped a little bit, but I was able to straighten it back out.
Ground and smoothed. It isn't perfect, but I'm going to use it. I'm struggling with this super thin Stainless.
I made a plug for the exhaust pipes so I can backpurge the welds. I made two different sizes - a 2-1/2" ID pipe (for the cat and mufflers) and a smaller section for 2-1/2" OD pipes. It seals into the tube with an o-ring, and has a barb fitting on the other side. I didn't do a lot of research on back purge setups, so hopefully this works and doesn't give me much trouble.
I took a break for a late summer bonfire at a friend's house. I wish I was a better photographer.