Precision investment casting apparatus with reservoir blocks

摘要

Precision investment casting of small parts with fine detail and free of air inclusions is achieved by the use of flat sided blocks of a relatively high melting point plastic material received upon elongated tubes or rods of the same or similar material. The shape and size of the blocks permit a large number of small parts to be cast at the same time and provide reservoirs for the molten casting metal close adjacent the casting cavity.