I tested some more and it seems to be even cooler, maybe around 110 or 100. You can pretty much hold your hand on it, and then brush. When its done right, there is no differance in color with the orig work, the weld (with or without fill), and what was welded to it. No color change from piece to pie...

This pertains to stainless steel tig welding

I read this today from this website and always thought there was a temperature sweetspot "Steel heat tint will brush off easily and completely. You can tell when the metal is at that “Temperature sweet spot” by running the wire brush over the weld at an angle." Does anybody kn ow what that...