I'm not saying it won't work. I'm just saying I would not do it. Lets say you are doing a big batch, you have 25# of grain, and, I dunno....8 gallons of water. water is 8# per gallon, so you have 64# of water, and 25# of grain. That's 89#, plus your mash tun and who knows what else. You run your mash off, and sparge anothet 8 gallons, you just added 64 more lbs. It might work, but I sure would not feel comfortable with it. That thing might hold up, but there is also the chance it gets squirrely, and topples. That's just my opinion though.