Fillet - Adjacent Face Angle The angle between the support faces is too small. Featureworks cannot recognize fillets if the angle between the support faces is less than approximately 61.35°. Parent topicFillets Fillet - Planar Face Fillet - Tangency Fillet - Support Face Radius Fillet - Large Radius Fillet - Radius Across Greater than Radius Along Fillet - Spring Edge Fillet - Vertex Fillet - Invalid Selection Fillet - General Failure