Forgot to mention that my 788H is actively air cooled, i have a four inch hose coming out of the side to suck the welding fumes in through the front and out through the tube and away from the work area.
That’s it on the bench in the background, behind that pecan stained witchblade with @psychotiller 's wheels on it.
In addition to sucking air through it with a small blower fan, i also added heat sinks to the welding arms just behind the copper welding rods, and a lot of holes in the face plate to suck air through the faceplate and into the box, then out the tube. Fumes are eliminated, and the whole thing stays a LOT cooler, and i’m able to get better welds.
but i’m ditching this for a Sunstone with wands as soon as I have the cash. I’ve already got a quote on it. And it will do copper.