[Gmsh] cross section from Solidworks into gmsh

[Zenker, Dr. Matthias]

Hi all,
 
I had some problems to generate 2D data from a cross section of a 3D
geometry in SolidWorks. Thanks to a note from Rich Bayless, I have
solved this problem: If you know how to do it, it is possible to export
the cross section as a 2D STEP (or IGS) file which gmsh can read. Since
I may not be the only one for whom this is useful, I want to share the
information with the list. You can find it below.
 
Matthias


________________________________

	From: Rich Bayless [mailto:richard.bayless at att.net] 
	Sent: Friday, January 30, 2009 7:10 PM
	To: Zenker, Dr. Matthias
	Subject: Re: cross section from Solidworks into gmsh
	
	

		Hello Matthias,
		 
		your question about extracting a cross section from
solidworks was interesting.  Seems that once you create a 2D drawing
from a solidworks section view, that DWGeditor only allows saving the 2D
entities as DXF, which is not currently supported in gmsh.
		 
		I experimented a bit and was able to do what you want,
from within solidworks.  Open the 2D drawing with your desired section
view using solidworks.  Solidworks will show it as a drawing, not a
part.  Open a second window with a new, blank, part.  Select all desired
entities, and copy/paste the entities to the new part.  The new part
will show a sketch with your entities.  Select the sketch and Insert,
Surface, Planar, and it will make a surface.  You can then save the
surface as either igs or step, and it will open in gmsh.
		 
		I suspect that the above tactics will be useful for
anyone using a commercial 3D cad program.
		 
		Hope this helps,  Rich.


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