Filleting produces null faces

After filleting cylinder/box fusion, the cylindrical surface of the cylinder cannot be meshed.

Output of BRepFilletAPI_MakeFillet operation:

Interior extension at the start of guideline
FindFace : the extremity of the spine is not in the end face
FindFace : the extremity of the spine is not in the end face

COMPUTE: temps total 0.04s dont :
- Init + ExtentAnalyse 0s
- PerformSetOfSurf 0s
- PerformFilletOnVertex 0.03s
- FilDS 0s
- Reconstruction 0.01s
- SetRegul 0s

james smith's picture

BRepFilletAPI_MakeChamfer produces similar problem result.

Forum supervisor's picture

Dear james,
The problem is not in the mesher itself, but rather in previous fillet operation.
Your filleted shape is not valid.
Draw reproducer:
pload ALL
restore filletfuse2.brep s
checkshape s
## On Shape faulty_1 :
## BRepCheck_UnorientableShape
## Shape faulty_2 on shape faulty_1 :
## BRepCheck_NotClosed

## Faulty shapes in variables faulty_1 to faulty_2

You can simply try to fix it using :
fixshape r s
incmesh r 0.01
## Meshing statuses: NoError
So, now it is Ok.

You are also welcome to register the failure of the fillet operation (which produces not valid result) via the Collaborative portal -