Problem

Unable to convert a surface to a solid

Solution

Possible Reason: Surface has intersecting surfaces.
Solution: Check the surface for odd twists, etc. If the surface was created by section, make sure the profiles have the same element direction.

Possible Reason:The proposed enclosed volume has gaps or overshoots at the corners.
Solution: Rebuild surface to create a closed volume. Disable smoothing (if possible) when build surfaces from profiles.

See Also