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  1. #1
    Join Date
    Oct 2005
    Posts
    8

    Default how to

    I am building some display racks for a customer and my metal supplier has problem with mill scale and i've tried just about every grinding and prep wheel. I was wondering what works good. Any input would be greatly appreciated.
    Thanks mitch

  2. #2
    Join Date
    Sep 2005
    Posts
    10

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    I found that the rubbery sanding disc that kind of resembles a tuffy pad used with the rubber backing pad in my drill press seems to work pretty well for me. It definitely leaves marks on the metal though. I've heard the flapper discs work well, but I haven't personally used one.

    -dath

  3. #3
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,919

    Cool

    I built lots of display racks from HR flat bar. I use a Med flap wheel or 4 1/2" discs on my angle grinder. You will use a lot of them going to shiny metal...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

  4. #4
    Join Date
    Sep 2005
    Location
    Vernon Ct
    Posts
    118

    Default

    Try sandblasting. 90 psi with good grit does a great job.

  5. #5
    Join Date
    Sep 2005
    Location
    Syracuse N.Y.
    Posts
    60

    Default

    Another option is to use cold rolled-no scale just some oil to clean.

  6. #6
    Join Date
    Sep 2005
    Posts
    5

    Default

    The easiest is to order your material P&O (pickled and oiled).

    Methods for removing HR scale, other than grinding, include abrasive or shot blasting, and chemical pickling (generally acid or salt bath).

    Some commercial products exist. I haven't tried this one myself, but it's been highly recommended. I don't know the price.
    http://www.picklex.com/

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