Fusible core injection molding is a type of plastic molding process. It uses a special type of mold called a fusible core. The process works by putting the mold in a machine and heating it until the plastic inside melts. Then, a liquid plastic is injected into the mold and cooled until it hardens. Once the plastic is hardened, the fusible core melts and creates a hollow shape inside of the hardened plastic. This hollow space can be used to hold things like buttons, switches, or circuits. Fusible core injection molding is used to make many different kinds of plastic parts.