I used schedule 20, 2 inch tubing, 308L 0.8 mm stainless stainless steel plain sheet, 0.8 Stainless mig wire & argon.
Each division for sound dumper i put on stainless steel wool then raft with fiber glass matting. For inner compartment i used 0.6 mm stainless steel
Nice project bro Crazy cut... Just curious do you bend pipe and/or tube and what tool or method do you use?
Actually i don't have bender all you have to do is - like the pipe. Cut features made by cutting disc in horizontal direction then each cut hammered with pointed chesil.
The plain sheet was formed by holding at both end with your hands while pressing the later end with your belly at the horizontal pipe or your can tac weld at a time on the both end cover plate direct.