What do you need to do with this in SolidWorks?
Typically, a mesh model is only good for a reference and would need to be rebuilt using SolidWorks own modeling tools.
For some things, you might be be able to import a mesh as a solid or surfaces, but the limiting factor here is the number of triangles. About 15,000 - 20,000 tris is the upper end for using it as a solid or surface body in the Standard SolidWorks
If you have the Scan to 3D option in the SolidWorks license (SolidWorks Premium) this would give you a some options to be able to fit nurbs surfaces to the triangles, as well as opening larger files.
Converting a triangulated file to directly to an IGS file is usually not helpful, as the triangles don't change. The exception to this would be using something like Geomagic, which fits a smooth nurbs surface to the triangles.
Thanks Chris. We were attempting to get the mesh into SW to use as a reference or template to redraw as solids, but have not been able to do that as of yet.
The model has some organic curvature to it that we are concerned we may lose and not be able to re create in SW as it was created originally in 3DSMAX using spline interpolation rather than NURBS. Now we have to get it into a solid to send for the mold to be made.
We do have a successful STL but those dont seem to import into SW either. Nor does the DWG.
Time to rebuild it I suppose. thanks again.
I don't know if 3DSMax's spline surfaces can be exported to nurbs without some kind of an add on. The Power Subd Nurbs plugin for 3DSMax http://www.npowersoftware.com/NewPowerSubDNURBS.html might save you a lot of time if you can get a nurbs file directly from 3DSMax. There is also the version that Dave referenced above that is a plugin for SolidWorks
Its possible to open a much larger mesh with millions of triangles in SolidWorks if you choose "graphics body" in the import options. It can't be used directly to build surfaces, but can used as a visual reference. Sometimes its useful to cut a mesh up into sections before importing it into SolidWorks so parts of it that may get in the way can be hidden.