From Clay To Bronze

If you want to make a sculpture in bronze, you must make it three times: first the form must be crafted in clay, then in wax, and finally in bronze, each step as meticulous as the last. 

This is what goes into making a simple vessel:

Original clay positive with attached sprue 

Plaster mold

Hollow wax positive from plaster negative

Two waxes all gated up and ready to be invested
(über ghetto)

The raw bronze with investment still on it + in it

(You can watch the bronze pour here)

Gating cut off, core pins and flashing 

removed, surface wire brushed

Sandblasted and buffed

Layers of patina applied to achieve a leathery surface