You can use the Segment Imported Mesh
Body tool to group facets of a mesh BREP body into faces bounded by sharp
corners, planar faces, and cylindrical
faces.
The
Segment Imported Mesh Body

tool identifies:
- Groups of facets that form planar or cylindrical faces.
- Faces that are separated by a sharp angle or crease angle.
- Planar faces in a mesh BREP body so that you can use them as
sketch planes, extrude references, and in other models with planar
references.
This tool is most useful for CAD files that you export to mesh and then import
into the SOLIDWORKS software and convert to mesh BREP bodies. Although the tool can work
with scanned files and bodies with mesh-based sculpting and artistic geometry, these
often have very irregular geometry that the software cannot segment.
When you import a mesh file and convert it into a mesh BREP body, each body is
represented by a single face. The facets are not grouped or segmented into groups of
facets that form faces.
Converting a mesh body to mesh BREP is not like converting standard SOLIDWORKS BREP to
mesh BREP, where face definition in the standard SOLIDWORKS BREP is preserved in the
mesh BREP.
In the example that follows you set system options and import a mesh
.STL file. Then you divide the mesh BREP body into crease
angle, planar, and cylindrical segments.