STEP 1:
A wax pattern is produced by injecting wax
into a metal die.

STEP 2:
The wax pattern which is an exact replica
of the required part is removed from the die.

STEP 3:
The wax patterns are attached to a central
wax bar, called a sprue, to form a cluster
or tree.

STEP 4:
The tree is dipped (invested) into a ceramic
slurry.

STEP 5:
After drying, the coating process is repeat
-ed with progressively coarser refractories
until a self supporting shell or mould is
formed.

STEP 6:
A self supporting shell or mould is finished
when approximately 3/8" thick.

STEP 7:
Once the mould is dry, it is heated to allow
the wax to run out.

STEP 8:
The tree is fired at a high temperature to
sinter the mould, remove all residual traces
of wax and preheat the mould for pouring.

STEP 9:
Molten metal is poured into the heated mould

.
STEP 10:
After cooling, the mould material is removed
by vibration, chemical cleaning, or mecha-
nical blasting.

STEP 11:
Parts are cut out from the sprue, lightly
ground and prepared for shipment.