Mehrgarh copper amulet shows lost-wax casting reaches the Indus Valley
Lost-wax casting in copper shows up for the first time around 4000 BCE, in a small wheel-shaped amulet from Mehrgarh in present-day Pakistan. The craftsperson who made it was working within an established tradition, solving the tricky chemistry of molten copper. Six thousand years later, the same basic method still shapes dental crowns and turbine blades.








