Hinges and Hinge Based Catches for Jewelers and GoldsmithsThis book analyzes jewelry hinges and hinge like mechanisms in a manner never done before in a single volume. It has become a classic, and is our best seller. Along with history, generics, classes of hinges, construction and guiding principles, sections include: design, tube making, hinge pins (force fit, riveted, upset, tapered, cotter type, tubing, square, threaded, stud), hinge types (basic, thick walled, locket, bracelet, box, block, cold rolled,