Defect: Nail exposed | Frame picture
Cause: 1)poor workmanship; 2) air pressure for air gun is too high or too low.
Solution: 1)use correct size of nail and nailing correct location to ensure frame size longer than nail; 2)worker should adjust air pressure base on nailing condition.
Typical: * * * *
Rework difficulty: * * * *
Rework collateral risk: * * * *
