Why 1 - ID oversized 0.05mm beyond drawing limit.|Why 2 - ID oversized during the re-pass operation as the re-pass ran twice.|Why 3 - Re-pass ran twice with same 0.15 wear offset as the operator provided -0.2mm wear offset during the insert change.|Why 4 - To maintain stock in the ID after the insert change the operator provided -0.2mm in the initial stage and after measuring the bore he provided +0.15mm to remove the stock and finish to the drawing requirement during this time the re-pass operation was carried out and resulted in Bore oversize.|Why 5 - Operator was unaware that the program for ID runs twice with different stock levels to achieve finish in the final operation.