Door hinge cutter – A hinge joint is a connection point between two objects that allow movement, backward and forward, on a plane. The joint does not allow side to side motion.
The armpit of a human skeleton is an example of a door hinge cutter. Ulla bones in the forearm are connected to the homers of the upper arm, and the joint allows back and forth motion on a 180 degree plan. The body is back and forth movement called bending and stretching. Flexion brings the lower arm and hand to the upper arm and the shoulder. Extension brings the lower arm away from the upper arm until they form a straight line. The joint does not allow movement beyond the straight line, which makes it a hinge.
12 Picture Gallery: How to Use Door Hinge Cutter
Door hinge cutter and toe joints are other examples of human skeleton hinges. These small hinges include other joints of fingers, toes and thumbs, and the third joints of fingers and toes, with the exception of the big toe. The joints and muscles work together to bend and stretch their fingers and tear along their 180-degree movement plan. Mechanical hinges make everyday life more practical because they help construct many of the structures and objects people use on a day-to-day basis. Hinges are available on standard doors that open and close on 180-degree aircraft, jewelry box cover and toy box cover that open and close and cabinets.door hinge cutter
This post topic: Door Hinges