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Thread: aluminum polishing
          
   
   

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  1. #1
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    aluminum polishing

     



    I have to build a couple fan shrouds, battery box and some other non-structural type parts, curious what grade of aluminum you guys use when you want something that is going to polish up really nice..... Thanks
    Yesterday is history, tomorrow is a mystery, Live for Today!
    Carroll Shelby

    Learning must be difficult for those who already know it all!!!!

  2. #2
    hotroddaddy's Avatar
    hotroddaddy is offline CHR Member Visit my Photo Gallery
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    We used 50-60 series ,i think, on the lola`s, i polished that up real nice, i also made a valve cover brace out of some 70 series, lockeed martin made angle stock, got that shined up with just a buffing wheel on a bench grinder

  3. #3
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    t0oL is offline CHR Member Visit my Photo Gallery
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    grade of aluminum?

    there are alloys

    1XXX higher purity (very soft-electrical conducting)
    2XXX copper alloyed -good for threading, usually a cast piece
    3XXX silicon with copper and/or magnesium alloyed- cast
    4XXX silicon alloyed -cast
    5XXX magnesium alloyed
    6XXX magnesium and silicon
    7XXX zinc -aircraft alloys
    8XXX tin or other- depends on wrought or cast
    9XXX other
    other designations for casting alloys
    too much information?

    I have seen brilliant 3003 alloys
    sometimes they are "brite" dipped
    in Hydroflouric acid and rinsed

    ASM rated them all about the same for corrosion resistance
    except 2XXX alloys

    a good clear aluminum sealer would be a good idea

  4. #4
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    w2zero is offline CHR Member Visit my Photo Gallery
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    Sure, just whip out some hf and dip away. Thanks for the list of alloys, I'll be saving that.
    sixty clicks West of Chu Lai
    class of 69

  5. #5
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Thanks for the help guys. Now got to get hold of my materials guy and get some stuff ordered.
    Yesterday is history, tomorrow is a mystery, Live for Today!
    Carroll Shelby

    Learning must be difficult for those who already know it all!!!!

  6. #6
    Don Meyer is offline Moderator Visit my Photo Gallery
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    t0ol, You mentioned aluminum sealer. Can you give us more information on al. sealers?
    Don
    Don Meyer, PhD-Mech Engr(48 GMC Trk/chopped/cab extended/caddy fins & a GM converted Rolls Royce Silver Shadow).

  7. #7
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    6061-T6 is probably the most readily available alloy going. Great general purpose material and will polish up fine too.

    Even the casting grades will polish out luxuriously (intake manifolds, water pumps for ex).

    Kitz
    Jon Kitzmiller, MSME, PhD EE, 32 Ford Hiboy Roadster, Cornhusker frame, Heidts IFS/IRS, 3.50 Posi, Lone Star body, Lone Star/Kitz internal frame, ZZ502/550, TH400

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