I'm in the process of converting a 400 gallon single wall ss tank into a mashtun. In terms of screen material to fabricate a false bottom from, I've been looking at some perforated stainless sheets from McNichols (http://www.mcnichols.com) — specifically, this stuff (image below)...
McNICHOLS_R Quality Perforated Metal, Round Hole, Stainless Steel Type 304, 16 Gauge, Mill Finish, 3/32" Holes on 5/32" Centers, Staggered Pattern, 33% Open Area, Sheet, 36.0000" Width x 96.0000" Length
Item#: 1833531638
TOTAL*: $274.08
I figured I'd have a local/reputable metal guy cut the sheet into 2 half circles and weld on some support braces and legs. Would this screen be appropriate enough for lautering a mash of barley/wheat/rye and the like? I'm feeling like something thicker than 1/16 (16 gauge) would be better but I'm not seeing much else out there. Is there anything else that might be recommended by others who've already done this sort of thing?