Open Polysurface and Naked Edges

Rhino Rhino for Windows
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1

Hello, I am a first year architecture student, our assignment was to model our paper folding models, and I thought I was done, but it seems I am still lacking enough info to know why I have naked edges all around my paper model study, and it causes issues if I try to use UnrollSrf, since we have to show what it look likes flat.

Here are some pics, as it is still a open polysurface, how can I convert into a closed polysurface?:

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image447×421 14.4 KB

Once unrolled which I don’t think is suppose to look like this:

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image621×457 20.9 KB

Any advice as a beginner would be helpful as I am soon finishing my first semester using Rhino 8.

2

Hi Lucas -

Surfaces have no thickness. When a surface is not joined to another surface (or to its own edges as in a sphere), you will have naked edges.

To represent a paper model, that is generally fine. You generally don’t want to model the thickness of a piece of paper.

Are you sure your 3D model can be created from one piece of flat paper?

Posting a 3dm file generally makes it a lot easier for others to help you…
-wim

3

Also, naked edges do not cause problems with UnrollSrf.

4

UnjoinEdge can be used to un-join edges (effectively splitting the surfade along an edge) which controls how the surface will be unrolled.