Firewall Patch

The Firewall separates the cabin from the engine bay. It has sound & heat-proofing material glued to the engine side which can trap moisture and start rust. This car's firewall has a few holes that need patching. Here's one done...

Here's the hole I cut out to fill...you can see how pitted the piece was that came out of it below.

Here's the replacement piece I fabricated..

 Held in place with Intergrips..

Tack welded, then fully welded. After all this, I ground it smooth and primered it.