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Bending brass sheet to a radius?

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  • Bending brass sheet to a radius?

    The task is to bend a piece of brass 1.5" by 6" by .125 thick to a radius of 3.750". I figure to mill up a couple of blocks of hardwood or aluminum and press the part between the blocks. But what radius to use to allow for spring back?

    I am thinking maybe a 3.000 radius but that may be too tight. I would prefer to not do this a dozen times before getting it right!

    Any thoughts will be welcome.

    Errol Groff
    Errol Groff

    New England Model Engineering Society
    http://neme-s.org/

    YouTube channel: http://www.youtube.com/user/GroffErrol?feature=mhee

  • #2
    If you aneal it, it should not spring back. Heat the bend area to red heat and allow to cool. Quenching or air cooling works equally well.
    Jim H.

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    • #3
      I thing JC is right. That .125 thick brass is going to fight you all the way if you don't get some heat on it. Heat it mostly on what's going to be the inside and you might find it will "start" to take a set in that direction. If I was doing it I'd use my press.
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      • #4
        Sorry, if I were to think of doing it, I'd use bending rollers.

        Regards Ian
        You might not like what I say,but that doesn't mean I'm wrong.

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        • #5
          Thanks for the tipsl I made a simple tool of MDF and annealed the part before bending. The bend was done in an arbor press and came out just fine. The desired radius was 3.750 and the tool was made to 3.500 radius which worked out nicely.





          Thanks again!!

          The never ending #8 engine project trudges forward.
          Last edited by Errol Groff; 03-18-2009, 06:39 PM.
          Errol Groff

          New England Model Engineering Society
          http://neme-s.org/

          YouTube channel: http://www.youtube.com/user/GroffErrol?feature=mhee

          Comment

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