Downloaded from https://www.everyspec.com APPENDIX C MIL-STD-31000A Effects of condition on CAD data quality for manufacturing: This condition is extremely difficult to manufacture and is usually unintentional – not design intent. Recommended correction: Modify one or both bounding features to close the narrow space. C.7.7.7 Narrow Step (G-SH-TO) Definition: A narrow face, or narrow region of a face, which forms a sharp offset between neighboring faces. Measurement: Maximum distance across the narrow face or region. Effects of condition on CAD data quality for manufacturing: This condition is difficult to manufacture and is usually unintentional – not design intent. Recommended correction:
Modify the neighboring features to align the larger faces on either side and remove the sharp offset. C.7.7.8 Over-Used Face (G-FA-OU) Definition: A face which is used in more than one shell. Measurement: The number of shells which contain the face. Effects of condition on CAD data quality for manufacturing: While this condition may be valid and desirable for CAE analysis, it is a non-manifold BREP condition (impossible to manufacture) and should not exist in a model intended for direct reuse in manufacturing processes. Recommended correction: Modify the neighboring features to remove this condition. 123