Level and Square

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Hello All, Iam making a rotating assembly it will be 12ft long and 32in wide.using 3x3 1/4 wall square tube.I have a pic of one of the ends in a pic.I dont have a level piece of flooring -concrete anywhere any ideas on how to weld the 4 pieces together and keep them level any ideas?I really need these level and square. The bottom of the stand looks pulled up but it is nice and level just the pic and my floor..Thanks Dale Attached ImagesMiller 250DX HTP 221 DV AC/DCHenrob O-A Miller 180 MigMiller 150 Inverter   Hobart 10,000 Welder-Generator   Have a good day!!!
Reply:Cheapest might be 4 harbor freight jack stands.  OR, get 4 of the SUMMER.A couple of 2'  framing squares will help too.http://www.toolup.com/sumner_780375_...d=scsho1062794http://www.toolup.com/search.aspx?Se...rm=pipe+standsLast edited by BD1; 03-28-2013 at 09:05 PM.
Reply:I'd set up saw horses or jack stands and shim them to level and work from there. I've worked off worse floors.Square is easy, pull diagonals..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by DSWI'd set up saw horses or jack stands and shim them to level and work from there. I've worked off worse floors.Square is easy, pull diagonals.
Reply:i am really not sure what you are building here but i deal with the same stuff. i have built allot of stuff and my garage floor sucks but it's all i have just like you , so what i do is put leveling feet on every corner of everything  i build and just level it every time i use it "if it's portable" . what i use is 3/4 square head bolts and weld a long nut on each corner and i have a socket that fits the sq. head and use my cordless drill to level it "works like a champ" good luck Chris
Reply:Yep, jack stands will help keep everything nice & flat.  Fairly easy to square up the project with a simple framing square or use the 3-4-5 method. Attached ImagesMarkI haven't always been a nurse........Craftsman 12"x36" LatheEnco G-30B MillHobart Handler 175Lincoln WeldandPower 225 AC/DC G-7 CV/CCAdd a Foot Pedal to a Harbor Freight Chicago Electric 165A DC TIG PapaLion's Gate Build
Reply:I may not be understanding your post correctly, power...If your sticking things together on the floor you can snap chalk lines & work with plumb bobs, string & shims. If you're gonna weld it out & level it when you need to use it you need shims or leveling feet. Chalk lines are not an excuse not to also pull diagonal measurements as things go along.If you're looking for a good way for one person to tack things up square in 3 dimensions you can make a Z-square. Photo of 2 attached;Good luckMatt Attached Images