Pencil core magical effect

Edge of the wooden doors do not rub too much, otherwise it will cause angular paint off. Hinge, lock is often activities of the accessories, loosening should be immediately tightened, the hinge position should be promptly sounded oil, lock is not flexible when the keyhole can be added to the appropriate amount of pencil core foam, not just filling the oil. 'Pencil lead is the main component of graphite and clay. Why does graphite have the effect of lubrication? This is determined by the specific physical properties of the graphite. Graphite is a layered structure with a "mother" of diamonds. The binding force between layer and layer is relatively small, easy to slide, and electrons can flow freely. This unique structure makes the graphite texture soft, easily crushed into very fine scaly powder, so the lubrication effect is good. According to the characteristics of graphite, it is cleverly applied to life, in addition to the above-mentioned lock to solve some of the problems, but also can be used in other places. Such as: when the violin wood string axis too tight, the pencil on the shaft with a few strokes, you can make it flexible rotation