ISABELA PAREDES CISNEROS writes:

> Hi everybody!
>
> I would like to know if it is possible to combine volumes. I have two 
> cylinders created using the Extrude command. This cylinders intersect anyway, 
> not sharing a surface but overlapping. Also this cylinder then will be holes 
> in a box. So I am trying to
> combine a couple of cylinders (in the future there will be many many 
> cylinders) and then subtract them from the box. I know the file here doesn't 
> work since the volumes are overlapping. 
>
> Any ideas?

Hello, I think you still have to perform two boolean difference
operators on the bodies for GMSH to consider them as one solid with two
holes:

http://gmsh.info/doc/texinfo/#Boolean-operations

-- 
Alberto


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