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Thread: Unfolding a 3D object

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    Default Unfolding a 3D object

    Does AutoCAD have the ability to "unfold" or "unwrap" an object into a flat 2d?

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    Mod / Salary / SM Wanderer's Avatar
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    Talking Re: Unfolding a 3D object

    Quote Originally Posted by jnewell
    Does AutoCAD have the ability to "unfold" or "unwrap" an object into a flat 2d?
    I'm going to move this from the Tips & Tricks forum, as I believe it will be better served here. Thank you.
    Melanie Stone
    @MistresDorkness

    ARCHIBUS, FMS/FMInteract and AutoCAD Expert (I use Revit, too)
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    Certified AUGI Addict jaberwok's Avatar
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    Default Re: Unfolding a 3D object

    Quote Originally Posted by jnewell
    Does AutoCAD have the ability to "unfold" or "unwrap" an object into a flat 2d?
    Short answer - no.

    Inventor does. So do several other modelling packages. I believe there are sheet-metal type add-ons for acad.
    John B

    "You can't convince a believer of anything; for their belief is not based on evidence, it's based on a deep-seated need to believe." - Carl Sagan

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    Default Re: Unfolding a 3D object

    Try this lisp routine.

    Aled Taylor
    Design Engineer
    Attached Files Attached Files

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    Default Re: Unfolding a 3D object

    Can this lisp program flatten out a curved plate stringer or railing that I create with ADT or Revit?
    How does this lisp work, can you explain further?


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    Default Re: Unfolding a 3D object

    I'm not familiar with ADT or Revit only AutoCAD.

    You need to start with a ruled surface. This can have bends and twists in it.

    If you have a solid you can explode it to make surfaces, and explode it again to make plines then create a 'rules surface' between 2 plines.

    The routine will draw a flat pattern of this surface.

    It's useful for designing things like boat hulls that are to be fabricated from sheet metal or plywood.

    I hope this helps.

    Aled Taylor
    Design Engineer

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    Default Re: Unfolding a 3D object

    Thanks Aled for the explanation. I will try to play with it when I get some free time.

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    Default Re: Unfolding a 3D object

    I'm trying to figure out how to unfold these stringers with your routine.
    Can you give it a try and let me know if there is something special that i should be doing for it to work properly. Thanks a bunch it is greatly appreciated.
    Attached Files Attached Files

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    Default Re: Unfolding a 3D object

    Quote Originally Posted by jaberwok
    Short answer - no.

    Inventor does. So do several other modelling packages. I believe there are sheet-metal type add-ons for acad.
    Is there a tutorial somewhere that explains how to accomplish this in inventor?
    I have a copy and would become the office hero if I could figure it out.

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    Default Re: Unfolding a 3D object

    Quote Originally Posted by Robert.Hall
    Is there a tutorial somewhere that explains how to accomplish this in inventor?
    I have a copy and would become the office hero if I could figure it out.
    I'm sure there is but I've only seen reference to it in print reviews.

    BTW "inventor tutorial" returns approx 478,000 links in Google.
    John B

    "You can't convince a believer of anything; for their belief is not based on evidence, it's based on a deep-seated need to believe." - Carl Sagan

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