Investment Casting is a time-tested technique of working metal that has been improved and modernized to meet the stringent demands of high technology. In essence, investment casting involves the production of ceramic shell molds into which any desired grade of metal or alloy can be poured with strict metallurgical control. Even the most complex machine parts are easily and accurately reproduced. Intricately designed parts, such as those used in jet propulsion systems for the aerospace industry that would be impossible to manufacture by traditional machining. Investment casting makes the production of complex parts easy and economical. High tolerance levels are achieved. Production costs are kept down. Mass production is made possible.