[Gmsh] Joining two pipes

[Geordie McBain]

2010/8/6 Martin Vymazal <martin.vymazal at vki.ac.be>:
> P.S. Do you have any idea what open source software might be able to edit
> stl geometry? Salome maybe?

What editing operations do you have in mind? There's not a lot of
structure permitted in STL, unfortunately; e.g. it doesn't support any
features for tagging part of the surface as something like a `Physical
Surface' in Gmsh.  Some codes get around this limitation by using
several STL surfaces to represent domain boundaries; e.g. one for the
inlet/source patch, another for outlet/sink patch, and a third for the
rest of the boundary.

You can do some simple transformations with ADMesh like dilation,
translation, eversion, etc. (careful though, their website is really
broken at the moment
<http://sites.google.com/a/varlog.com/www/>).

MeshLab <http://meshlab.sf.net> looks good, but I haven't tried it yet
myself.  I haven't tried Salome either.