I concur on the plasma , you can cut just about anything with a plasma, nice n clean literally no warpage on thin stock
I paid like $80 a sheet, 1/2" x4x8 Scrap price
Check the decking in air freight aircraft, it is honeycombed with aluminum skin on each side, very light and they load tanks on it,.. Very strong,...
My airplane has a 5 year rubber replacement per manufacturer's mandate, so I tend to use the 5 year rubber replacement on anything that could...
The main thing when welding anything critical is to keep it clean, contamination is not your friend
Im a certified welder, welded lots of stainless inkenel you name it, it's not difficult at all to weld , stick, wire or tig,
Roger that
When I welded up the substructure for one of the Oil extraction pancake filters we used a tri mix , 72% argon,11% helium, 17% co2, this was mild...
at 26' are you using 14 guage metal for hull, or?
One can find materials at other then new , at 26' is this going to be trailerable or docked
Mega mex carries monel and inkonel products for below the water line
What thickness ateel, cold rolled or hot rolled
Although i used 5052 aluminum to make this, still easy to work with and weld..
Wont corode Easy to work with, great ductilibility, easy to weld, ....
Going to use stainless steel? Www.speedymetals.com