Aluminum frame for fire truck

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This is a frame I tacked together yesterday. It is for a fire truck, the kind that just stay at the airport. It is mostly 1.5" tube and angle. The customer came and inspected it this morning and gave me the ok to weld it up. After that it gets some panels and some tracks for roll up doors welded on as well. I will post more pics when I weld it up. Its square within 1/32", and dimensionally its within 1/16". This was another one of those prints with three place decimals, and like Engloid said I called the engineer and said WTF? And he told me not to worry about it.+/- .005 ok guys sure, get right on that. Attached ImagesLast edited by Burnit; 07-25-2008 at 07:03 PM.Yup
Reply:Looks really good and so too does your workshop. Yeah, three decimal places, you gotta wonder. Still, when it's .005 too big to fit it's shed, you'll hear about it!I think these crazy specs are all about butt covering. Either that or because there's room for three decimal places in the cad package, they feel they have to fill them. Or just because they can!Last edited by Tractapac; 07-25-2008 at 07:12 PM.Reason: typo!"One of the things we have to be thankful for is that we don't get as much government as we pay for." (Charles Kettering)Mitch 180 (NZ)Lincoln SAM-400-220 + ?-400 Fordson Major + 2 x Tractapac Humber 80 + Procut 40 PlasmaMiller Spectrum 375
Reply:+ - .005 on that?...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Nice tight fitups, Burnit, you coulda held +/-.010 at least!!!I r 2 a perfessional
Reply:Originally Posted by BurnitThis is a frame I tacked together yesterday. It is for a fire truck, the kind that just stay at the airport. It is mostly 1.5" tube and angle. The customer came and inspected it this morning and gave me the ok to weld it up. After that it gets some panels and some tracks for roll up doors welded on as well. I will post more pics when I weld it up. Its square within 1/32", and dimensionally its within 1/16". This was another one of those prints with three place decimals, and like Engloid said I called the engineer and said WTF? And he told me not to worry about it.+/- .005 ok guys sure, get right on that.
Reply:Originally Posted by Burnit+/- .005 ok guys sure, get right on that.
Reply:I don't think that that 3 digit precision was addressed to you. It usually required for 3D modelling like in SolidWorks and possible for CNC machine, which was cutting aluminum members. It just they were lazy enough not to produce separate set of drawings for welding. That is why the engineer told you not to worry about it...
Reply:Duane- couldn't tell ya what its for. The answer I got was "A firetruck were gonna build"This thing gets panels and doors, it covers the top half of the motor, a hydraulic pump and the muffler.DSW- This one is gettin TIG welded. They requested that because its a prototype and the big wigs will see it. If I do another one (which we probably won't, we don't do production) I am gonna use our new MillerMatic 350P, pulsed MIG.I am still playin with the 350P at lunch and after work, I absolutely love pulsed MIG, now I know why DavidR was so crazy about it. It really is the mutts nuts. Really.Yup
Reply:Originally Posted by BurnitDuane- couldn't tell ya what its for. The answer I got was "A firetruck were gonna build"This thing gets panels and doors, it covers the top half of the motor, a hydraulic pump and the muffler.DSW- This one is gettin TIG welded. They requested that because its a prototype and the big wigs will see it. If I do another one (which we probably won't, we don't do production) I am gonna use our new MillerMatic 350P, pulsed MIG.I am still playin with the 350P at lunch and after work, I absolutely love pulsed MIG, now I know why DavidR was so crazy about it. It really is the mutts nuts. Really.
Reply:Can I ask a novice fab question?When you guys build pieces like this with multiple tight fit ups, do you mill the individual pieces to final size and to hold perfect square, or do you have another method?Thanks.
Reply:Oshkosh isn't far from here, and they are a big company. If you work for an independent machining or welding job shop anywhere in southeast Wisconsin you will at some point be, making parts for Oshkosh truck, P&H mining equipment, Manitowoc cranes, Case/New Holland, Bucyrus/Erie the list goes on and on. If your adjustable wrench was made in the U.S.Chances are the thumbwheel was rolled in Saukville, not far from here. Miller is in Appleton.Snap-On is here somewhere,Yup
Reply:Originally Posted by exothermCan I ask a novice fab question?When you guys build pieces like this with multiple tight fit ups, do you mill the individual pieces to final size and to hold perfect square, or do you have another method?Thanks.
Reply:Thanks Burnit. That's a huge help.
Reply:Originally Posted by BurnitOshkosh isn't far from here, and they are a big company. If you work for an independent machining or welding job shop anywhere in southeast Wisconsin you will at some point be, making parts for Oshkosh truck, P&H mining equipment, Manitowoc cranes, Case/New Holland, Bucyrus/Erie the list goes on and on. If your adjustable wrench was made in the U.S.Chances are the thumbwheel was rolled in Saukville, not far from here. Miller is in Appleton.Snap-On is here somewhere,
Reply:Sworn to secrecy? Nope, I really have no ideaYup
Reply:Originally Posted by BurnitSworn to secrecy? Nope, I really have no idea
Reply:Originally Posted by BurnitDenrep your so crazy, Hey I saw a cow at the county fair this week that you could finish up that caddy with, forgot my camera though.
Reply:Originally Posted by Burnit Its square within 1/32", and dimensionally its within 1/16".