2018-09-252018-09-252018http://hdl.handle.net/20.500.12091/310A hinge connects two solid objects. A hinge allows rotation between two solid objects. Hinges connect doors to walls. Hinges also connect the doors on cabinets. A hinge has two flaps that rotate around a barrel. The barrel is a cylinder-shaped section. A pin is located inside the barrel. A pin is a cylindrical piece of metal. The pin is sometimes removable. There are many different types of hinges.en-USMechanicalHingesArticle