General: This Sterling Silver Vertabra is full scale and was made for
an advertising campaign in a medical journal.
Material: Sterling Silver.
Method: Hollow Constructed, Cast.
Designer: W.van Heeckeren.
Craftsman: W.van Heeckeren.
Price: AUS $ 1250.00.
CASTING is a method by which moulten metal is poured into a mold
in order to achieve the desired shape. In the "Lost
Wax" method, an accurate wax model is made. The wax
model is invested (put in a chrystobalite plaster),
after the investment has set, the wax is burned out in
a Kiln. This leaves a negative cavity into which the
moulten metal may be poured.
STERLING SILVER is a binary Silver alloy consisting of:
925 parts/1000 Pure Silver and
75 parts/1000 Pure Copper.
Annealing temperature: 750 degrees Celsius.
Melting Temperature: 950 degrees Celsius.