Scan&Solve works with Rhino solids (polysurfaces), extrusions, and meshes that are valid representations of solid shapes. To determine if a model is a proper solid, use the Rhino command “What” on the geometry. It should report something similar to the following.

If the polysurface is a proper solid the listing should show:

• “Valid polysurface”
• “Closed solid polysurface”

as highlighted above. If your model is not recognized as solid, use the tools under Rhino's [Solid] menu to make it into a solid that Scan&Solve can use.

If the extrusion object is a proper solid the listing should show:

• “Valid extrusion”
• “Extrusion Surface”
• “End caps: start and end capped”

as highlighted above. If your models is missing end caps, use Rhino's tools to close the open ends. Then use Rhino's [Join] command to join the surfaces together to form a closed valid polysurface on which Scan&Solve can operate.

If the mesh is a proper solid the listing should show:

• “Valid mesh”
• “Closed polygon mesh”

as highlighted above. If your mesh is not a valid solid, the deficiencies can be corrected using Rhino's mesh repair and editing tools under the [Mesh] menu.