Main Page | See live article | Alphabetical index The lost core process involves making a hollow plastic mould from a metal casting. The metal casting of the internal shape is made from metal, usually a lead alloy of about 40% lead with other elements added, which vary depending on the company and the item being made. Once cast, this core is loaded into a press and a plastic formation made around it. The plastic cast, complette with its inner core is then submerged in a liquid which only effects the metal, such as lutron. Once the core has been removed the plastic moulding is passed through a wash ready for handeling by operators who perform any other required tasks to complette the manufactured item. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.