[Gmsh] Importing and meshing a STEP model in Gmsh 2.0.0

Christophe Geuzaine cgeuzaine at ulg.ac.be
Tue Feb 6 16:02:37 CET 2007

jmb365 wrote:
> Hello,
> I am trying to import a STEP file from the tutorial at the CAELinux
> website which a solid model of a piston.
> Apparently, the step import process fails to recognize that there is a
> volume.  It does import all the faces, I think.
> I have 2 questions:
> A.  How can I turn on a shaded view of all the surfaces so I can check
> for completeness (i.e. no holes)?

Hello - that's not implemented yet: to get a shaded view you need to 
mesh the surfaces.

> B.  Can somebody please try this model and tell me if you are
> encountering the same problem I am (tetrahedral meshing fails)?  The
> file is attached to this email.  Or if you are successful guide me as
> what I am doing wrong, please.

The Delaunay algo (Options->Mesh->General->3D algorithm->Delaunay) seems 
to work nicely; Netgen fails on my machine too.

Thanks for the tests,


> Thanks
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science