# Unroll surface and define angles and direction of doubles

**URL:** <https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380>\
**Category:** Rhino for Windows\
**Created:** [April 22, 2017, 12:31am UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380 "2017-04-22T00:31:41Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![vikthor](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/vikthor/32/436812_2.png) [@vikthor](https://discourse.mcneel.com/u/vikthor)\
**Post date:** [April 22, 2017, 12:31am UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380/1 "2017-04-22T00:31:41Z")

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angle dimension surface 3d  
Unroll surface and define angles and direction of doubles Between faces of surfaces

Good day  
First of all, Thanks for your help

Esteemed group of 3d rhinoceros

I would like to ask for guidance for this problem that I have for days,  
I have some models in 3d. I need to fold with the angles that these models have but I can not find the right angle to bend equal to the model. Since there is no tool that does this.  
depronto someone can guide me  
I apologize for the inconvenience

I left a model and an image to explain myself better

 ![](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/1/5/155faffbf2b85fac100608a88e61a442ef15723a.png)

[estribos.3dm](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/8/4/84e74cc7ff7b685acdaa5741ae4d1038f900fd72.3dm) (2.3 MB)

Looking for the best way to size this :pensativo:

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**Author:** ![wim](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/wim/32/747482_2.png) [@wim](https://discourse.mcneel.com/u/wim)\
**Post date:** [April 22, 2017, 8:33am UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380/2 "2017-04-22T08:33:58Z")

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It’s not totally clear to me what you are asking for.  
If I understand correctly, you can just use the `Angle` command to find the angle of those folds.

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**Author:** ![vikthor](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/vikthor/32/436812_2.png) [@vikthor](https://discourse.mcneel.com/u/vikthor)\
**Post date:** [April 22, 2017, 11:30am UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380/3 "2017-04-22T11:30:59Z")

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Hi @wim

Sorry for my english

Thanks for your reply,  
But it does not give me the right angle since it takes angles in 2d  
And I need to know the angles between faces dim angle 3d.

I have left an example,  
I had to orientate each piece  
To project the curves on the surface  
And flattening said curves in a view view for using angle 2d

It is complex to unwind the piece, not knowing the correct angles between faces.  
Since the pieces are made on the 3d model

Or unwind the surface and automatically tell which is the angle in the plane 2d with the direction of folding example 120 ° above or 120 ° below.

![](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/e/f/ef65696103e71eec10b52876ae570d588072c601.jpg)

 ![](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/a/4/a4b44c59aaf474180927b162806a34d15c9d18d3.png)

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<div class="post-metadata">

**Author:** ![wim](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/wim/32/747482_2.png) [@wim](https://discourse.mcneel.com/u/wim)\
**Post date:** [April 22, 2017, 11:37am UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380/4 "2017-04-22T11:37:11Z")

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Hi Vikthor, from the last picture, it looks like you are using the `DimAngle` command. You should use the `Angle` command.

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<div class="post-metadata">

**Author:** ![vikthor](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/vikthor/32/436812_2.png) [@vikthor](https://discourse.mcneel.com/u/vikthor)\
**Post date:** [April 22, 2017, 11:47am UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380/5 "2017-04-22T11:47:38Z")

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Hello  
thank you very much,  
If that works

But there is some way to unroll the piece leaving me a note with the angles in the piece 2d

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**Author:** ![AlW](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/alw/32/53821_2.png) [@AlW](https://discourse.mcneel.com/u/AlW)\
**Post date:** [April 22, 2017, 12:24pm UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380/6 "2017-04-22T12:24:49Z")

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If I understand what you want correctly, I suggest you create a temporary plane perpendicular to each fold line, then intersect the sides of your part on each side of the fold line with the temporary plane. Measure the angle between the lines created by the intersection(s). This should give you the angle to use when unfolding the piece to flat.

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**Author:** ![Fred\_C](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/fred_c/32/146394_2.png) [@Fred\_C](https://discourse.mcneel.com/u/Fred_C)\
**Post date:** [April 22, 2017, 3:11pm UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380/7 "2017-04-22T15:11:13Z")

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This might help

> **[AutoCAD Drawing Plugin and Menu](https://www.strongtie.com/drawing/autocad-drawing-menu)**
>
> AutoCAD Drawing Plugin and Menu | Simpson Strong-Tie

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**Author:** ![pascal](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/pascal/32/479395_2.png) [@pascal](https://discourse.mcneel.com/u/pascal)\
**Post date:** [April 22, 2017, 3:39pm UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380/8 "2017-04-22T15:39:54Z")

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Hi Vikthor - `DimCreaseAngle` may be what you’re looking for.

-Pascal

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<div class="post-metadata">

**Author:** ![vikthor](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/vikthor/32/436812_2.png) [@vikthor](https://discourse.mcneel.com/u/vikthor)\
**Post date:** [April 22, 2017, 10:19pm UTC](https://discourse.mcneel.com/t/unroll-surface-and-define-angles-and-direction-of-doubles/43380/9 "2017-04-22T22:19:13Z")

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@pascal  
DimCreaseAngle Is a great tool, thank you very much, I did not know that, it avoids many complications

Unroll label angle.

I’m looking for something like this examples

But instead of numbering the edges write down the angles

![](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/5/c/5c25526f36d2f03a68eef2d72e824a473fd354dd.png) ![](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/6/f/6f9ba73eb99a4da999fdb562a23a6f9863478f81.png)

Sorry for uploading so many pictures, but it’s the closest thing to making me understand  
🙂