i create an extrusion shape by means of BRepPrimAPI_MakePrism. the profile contains just linear segments.
then i apply the chamfer on the top and bottom edges - BRepFilletAPI_MakeChamfer. in some cases the bottom and top faces are lost after the chamfering. side faces are created well, distances are correct - only one problem - body is hollow.
where can be problem? i think it is a simple task for the OC to solve.