Geometric defect: about
Introduction
A geometric defect is a particular entity:
 is created by Flux using tools for geometry checking
 is corrected by Flux using tools for geometry healing
Geometric defects
The geometric defects can be classified in:
 defects involving one geometric entity:
 abnormal face or face lower than automatic epsilon, a value (of surface) computed by Flux
 abnormal face or face lower than epsilon, a value (of surface) given by the user face
 abnormal line or line lower than automatic epsilon, a value (of length) computed by Flux
 abnormal line or line lower than epsilon, a value (of length) given by the user
 open wires
 defects involving two geometric entities:
 two superimposed entities: superimposed points, superimposed lines
 intersection of two entities: intersection of lines, intersection of lines and faces
The geometric defects identified by Flux are presented in details in the blocks below.
Abnormal entities
The presence of the very small faces / lines does not block geometry building. On the other hand, the entities of small dimensions can affect the mesh quality. The user defines the value ε , the limit for the face / line becomes a defect for the meshing.
Geometric defect  Why is this a defect? 

Abnormal face:
where: ε is the value of surface computed by Flux 
Geometry / mesh building is impossible. 
Abnormal face (user epsilon):
where: ε is the value of surface given by the user 
The mesh quality can be imperfect. 
Abnormal line:
where: ε is the value of length computed by Flux 
Geometry / mesh building is impossible. 
Abnormal line (user epsilon): where: ε is the value of length given by the user 
The mesh quality can be imperfect. 
Open wire
The geometric data imported in the Flux project can present the openings on contours difficult to detect with the naked eye and which obstruct the later construction of the faces. The user decides if the face must be built or not.
Geometric defect  Why is this a defect? 

Open wire:

The opening on a contour is blocking for the face building. 
Two entities superimposed
The types of overlay of two entities presented in the table below are not authorized by the geometry building module and as a result are blocking for the construction of the faces.
Geometric defect  Why is this a defect? 

Superimposed points (distance between two points is lower than the absolute precision)  Geometry building is impossible. 
Superimposed lines:

Geometry building is impossible. 
Intersection of two entities
The intersections of two entities presented in the table below are not authorized by the geometry building module and as a result blocking for the construction of the faces.
Geometric defect  Why is this a defect? 

Intersection of two lines:

Geometry building is impossible. 
Intersection of line and face

Geometry building is impossible. 