I use the wedge to keep the bar from getting pinched. Remember if the wind blows the wedge can fall out, as the tree starts forward out it comes only to have the wind bring the tree back with no wedge. If the tree has a back lean and the wedge falls out as described the saw gets pinched, the hinge breaks and major damage may occur. The wedge is no guarantee. If the tree has a back lean and you attempt to use a wedge to lift, while pounding you can break the hinge.
