On this wax pattern, the feed system
and the air venting system is attached and ceramic slurry is coated all around the
pattern. This slurry coating is a few mm thick and this depends on the component
After the coating step is completed, the wax is melted out in a process known as
dewaxing. This leaves a hollow ceramic shell in which molten aluminum can be pored.
Finally molten aluminum is poured
in and after cooling, the shell is broken to get the final
These castings can now be post finished, plated and secondary operations such as
hole drilling can be performed.
The above is a very accurate method of getting a small quantity of metal components
making a die for pressure die casting.