No idea of the final weight, but steel, two welders for now each around #60, a big 200+ MIG and a Plasma (likely a 60-70), 1 (for now) 125' bottle and a 40' bottle to be replaced with another 125. Toolbox (three drawer from my old cart) and storage boxes, room for all hoses, accessories, rods, electrodes, spools, helmet rack, grinder/powertool storage... it's gonna be a heavy bastard, thus, no casters, big wheels and lots of steel for framing. 1" tube with 3/4" bracing throughout, gussets and plates on the base. Oh, and a pair of cupholders 
Honestly, it only really moves to be able to store it out of the way, there's only a few small areas I'll be welding without yanking machines to take with me somewhere. I could set up a central location, but I weld in the driveway most, and with the chopper project in the center of the garage. it won't be mobile as much as moveable. The wheels are that weight rating because everything else they had was crap and really low, like 100# and I wanted solid, non inflatable.

Originally Posted by
Brian Ski
No casters??? Do you have plans for making the cart turn??? Unless you are thinking of a pivot like a wagon... But would that be unstable??? I am drawing a blank. Unless you pick it up to make a turn???
Ah, but that would be ruining the surprise
Yes, I have a solid plan for making it turn, and it will be very stable, more stable than casters even.
I guess the nice thing about all the other stuff going on in my life right now, lots of time to think. Hell, I even came up with a plan to put a motor on it to make it less strain on my back pulling it. Not implementing that, but it was a neat idea and would work great (no real need, no extra $$)
Trip Bauer
Former USN HT
Everlast 200DX New Model
Hobart Handler 125 MIG
Van Norman #12
Atlas 12" engine lathe
'98 RoadKing - 84 Ironhead - 59 Ironhead