I'm in the process of designing my own RIMS system. I want to fabricate most of my equipment to save money since I have access to a welder, plasma cutter and cutting torch.
My question is this: I want to build a mash tun that has the ability to hold enough grains to do batches of beer up to 30 gallons. I realize that a cube is possible for a mash tun, but does anyone know what it does for efficiency? I assume the shallower the better possibly? I don't want to use old kegs and I don't want to buy larger pre-made SS containers when I can buy SS sheets for pennies on the dollar for what pre-made containers would be.
Also, has anyone ever made fermentors in a cube shape? Obviously I ask this because last time I checked it wasn't cheap having sheets of SS being bent into semicircles. I realize that cleanliness might be an issue.