Casting
Notes:
Investment casting also known as the lost wax process has been used for centuries. The process uses a wax pattern which is invested with refractory slurry to build up a shell. The shell is then fired to strengthen and remove moisture, this melts the wax which runs out the shell, molten metal is then poured in the refractory shell. An ideal process for producing accurate complex components that might otherwise have to be assembled from many parts.