when drilling time, the cutting edge of the drill is broken in middle of the part.|The operator not observed the incomplete drilling operations.
after removed the from fixture only, able to observe either drilling operation completed or not. |Part total length tolerance is */- 0.2mm. But drilling point distance tolerance is */-0.1mm|when the drill operation, as per MPS. the drilling operation CNC programs drill coordinates from one face only.|If part total length with in 0.1mm tolerance, hole position distance is with in 0.1mm. If part total length above 0.1mm tolerance, hole position distance is apart from drawing dimensions.