[kreativasas]

Hi,
i need to do a boolean union on multiple objects. 
So i tried to make a union with the first and the second obj, the resulted mesh i make a bolean union with the third the resulted with the forth and so on.

It seems woking but the ultimate mesh is abount 200mb!! ( the original mesh are togheter 10mb) and it has million of triangles (more then the sum of original meshes triangles)

Why
I'm going wrong?

[abenedik]

Boolean operations can greatly increase the number of triangles because they use Constructive solid geometry (https://en.wikipedia.org/wiki/Constructi...d_geometry).

But to make a union you can just simply merge two meshes together by using Ab3d.Utilities.MeshUtils.CombineMeshes method (but you probably already know that because you have asked this some time ago - https://forum.ab4d.com/showthread.php?ti...ight=merge)

But if you need to have a mesh without intersecting triangles, then you will need to use boolean union and this will generate huge meshes. Maybe you can pass the generated mesh through some third-party mesh optimizer (maybe the 3D printer software have something like that). I am sorry but I do not have any solution for that.

[kreativasas]

Ok thanks.