1 Why : NG Part occur ?
ANS : Refer to the injectipn process, we have to insert sub-part into insert mold at that time some error occur to mis-position
2 Why : mis-position occur ?
Ans : during insert sub-part the hole position did not matching with insert pin that effect to mis-alignment
3 Why : mis-alignment occur ?
Ans : matching position between hole of sub-part and insert pin was too fix, that had to use hammer to hit support.
4 Why : too fix made the NG part ?
Ans : because during fix sub-part to insert, difficult to visual inspection that some time have ti use hammer to hit into.
5 Why : use hammer ?
Ans : Dimensional between sub-part and insert did not matching