Unroll Brep Problems

Grasshopper
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1

I hope someone here can help me here:

When I unroll simple BREP geometries (for example my rectangular towers), this works without any problems. However, as soon as I want to unroll more complex shapes, difficulties arise, such as overlapping surfaces or other problems. Does anyone have any tips or advice on how best to overcome such challenges? I want to end up with a smooth unrolled surface that I can continue working with :slight_smile:
241203_Unroll Brep.gh (46.3 KB)

Unroll brep
Unroll brep3000×2000 112 KB

fail
fail971×572 65.9 KB

2

Hello, you need to remove the L-shaped yellow colored surfaces and unjoin the pink colored edges.
In the real world you can’t get an object like this by folding a single sheet, you will have to cut some surfaces separately and add them later.
unrollbrep.3dm (120.0 KB)

Screenshot_1
Screenshot_1700×472 10.9 KB

1 Like
3

The edges that will split can be specified before unrolling:

  1. Use the UnjoinEdge command
  2. Select the edges that should be open after unrolling.
2 Likes
4

Look here:

1 Like
5

Thanks for your response :slight_smile: