Hole Issues: Length-to-diameter (L/D) Ratio
The following cost model variables specify the L/D ratio thresholds for various types of holes:
• Small, blind holes: smallBlindHoleDepthToDiaRatio (2 in starting point VPEs)
• Large, blind holes: largeBlindHoleDepthToDiaRatio (3 in starting point VPEs)
• Small, through holes: smallThroughHoleDepthToDiaRatio (4 in starting point VPEs)
• Large, through holes: largeThroughHoleDepthToDiaRatio (6 in starting point VPEs)
The property isBlind is true for blind holes and false for through holes.
A hole is considered small if its diameter is less than the cost model variable smallHoleDiamBorder (4.7625mm in starting point VPEs). It is considered large otherwise.