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circumference distortion formula

Discussion in 'Tips & Tricks' started by scott pagan, Feb 8, 2013.

  1. scott pagan

    scott pagan Member

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    Feb 4, 2004
    charlotte nc
    i have a customer needing to letter a watertower and it has a 3 lines of bold text. i am worrying that cut/application should be distorted so that the top and bottom lines of text will lay visually correct when the job is completed.

    my thinking is the top and bottom should arc away from center so it will lay properly, but don't know how i should 'do the math'.

    does anyone have any good tips for how to compensate for circumference when designing for a round object? think of a huge ball/helmet/etc.

    thanks
     
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  2. John Butto

    John Butto Very Active Member

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    Cut a piece of paper 3"x8.5" with a pencil, print the letters on it, now roll the paper as the water tower. Do you see a distortion.
     
  3. James Burke

    James Burke Being a grandpa is more fun than working

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    Mitten State
    There are companies that specialize in water tower lettering. Four years ago, I worked on a project with a third party that does this very thing. Let me see if I can track down their info.

    BTW...the exact term you're looking for is "spherical radius".

    This isn't the one we worked with, but perhaps they can help: http://www.mkpaintinginc.com/projects.htm


    JB
     
    Last edited: Feb 8, 2013
  4. scott pagan

    scott pagan Member

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    Feb 4, 2004
    charlotte nc
    thanks for the quick replies.

    this tower is a ball/globe rather than a simple flat (can) shape.
     
  5. James Burke

    James Burke Being a grandpa is more fun than working

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    Mitten State
    Spherical = ball shaped
    Cylindrical = can shaped



    JB
     
  6. J Hill Designs

    J Hill Designs Major Contributor

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    Sep 24, 2004
    you are going to have to use something like this, and distort your graphics until they are straight with the longitude (or latitude..whatever, the vertical ones) lines
     

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  7. MikePro

    MikePro Major Contributor

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    Feb 3, 2010
    Racine, WI
    they must have engineered drawings of this tower that you can use?
    no simple formula will really help, as the tower is most likely not a perfect sphere.
     
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