Injection moulding is a manufacturing process for producing parts. By injecting molten material into a mould. Injection moulding is perform with a host of materials including metals. For example glasses, elastomers, confections, and most thermoplastic and thermosetting polymers. Material for the part is place into a heated barrel, mixed, and injected into a mould cavity. Then where it cools and hardens to the configuration of the cavity.