
Lost Wax
'Lost Wax', to give it its English name, is a lead casting process used for both hollow and solid forms...
A model is first sculpted in wax, then encased in a protective plaster coating. When heated, the wax melts and runs out, ready to be be replaced with molten lead.
Once filled and cooled the mould is broken open, the plaster core removed, and the metal casting hand-finished by careful filing.