Penetration depth?????? How would I find the penetration depth of a staple shot into a material by a staple gun. It doesnt have to be specific to a staple. Material im concerned with is pvc. Even a general approach is fine. I know the force opposing the staple going in is the friction of the pvc.... gun has 4ft-lbs of energy to shoot the staple with.... need to know how thick of pvc I can shoot the staple flush to the surface with...I have found a few articles on research on this unfortunately their $30 to view on sciencedirect any help anyone can offer would help please im stuck on this and have been stuck for quite some time.