that weld looks - and I'm no where near an expert - cold...
I’m even less of an expert. What do you mean? Are you talking about the original welds or the fix? I’m always looking to learn more. Thanks!
There's very little color change in the metal, especially frame side, on the base patch. It implies lack of penetration. And looking at the bead itself, it seems like it's, on the side of the patch plate rather filling between both metal planes. I suspect that it may just be an optical illusion from the angle of the pic, though.