Geometry Checkers
Geometry checkers verify that there are no problems with model geometry that might that
prevent you from creating a valid FEM representation and mesh. For example, nonmanifold
edges (that is, edges that join more than two faces) cannot exist in a solid part. For
example, the central edge joining the three surfaces in the image below is a nonmanifold
edge.
Similarly, sharp angles between faces are undesirable, because they create narrow or distorted mesh elements. The geometry checkers highlight these problems so that you can make corrections before generating a mesh.