Closed Shell ( Solid )


#1

Hi Stevebaer ,

I try to create a solid, to do some simulation with SnS (Scan & Solve).

The solid is like a pipe or tube with the two side closed.
The cap that I drawn is a simple plate.

The question is :
Is normal that the boolean of this solid give me a two different solid
one inside the other ?

( P.S. Now, I draw a hole on the solid for keep the geometry that I would )

Thanks
Daniele


(Margaret Becker) #2

If you can post a sample model that displays this behavior, we are more likely to be able to answer your question.


#3

Yes, normal Rhino behavior with two closed shells one inside the other is to keep them separate. There is a workaround: run the command NonManifoldMerge on the two shells, then CreateRegions on the result. The result will be a single “disjoint” polysurface volume. Use at your own risk…

–Mitch


#4

Hi Mitch ,

thanks for the answer.

Daniele


#5

In Rhino V5, there is another way to create a solid with a hollow inside, but it only works for single,closed surfaces (like a sphere, for example). Offset the surface with the Solid option, and if the offset is clean (no self-intersections or folds) it will form a solid polysurface. While this only works for single, closed surfaces, not polysurfaces, it can be handy sometimes.


#6

Thanks Mark

Daniele