Tonight's venture

Went to Lowe's and picked up some shit.  2" hole saw and some 22 ga sheet metal.

Cut hole.

My high-tech dimple die.  Using a wooden ball, a 3" exhaust coupling, and my press.

Then I hammered the shit out of the sheet, stretching it over the edge of the coupling to get the rough profile I needed.  This is an instance where it woulda been nice to have a selection of hammers but I only had a ball peen.

I left the extra material around the edges because I wasn't sure how much I'd need of it once it was all said and done.  Going to do a bit more finishing work on it, cut it to shape and then weld it on this weekend hopefully.