Lost-Wax Casting Officially 6000 Years Old!This Amulet is widely becoming known as the oldest example of a casting technique still used today by NASA.
Discovered in the Neolithic village of Mehragarh, Pakistan, this product of lost-wax casting vigorously researched from Ipanema – a European center for studying archaeological materials. The process in which revealed the method of the objects creation is called ‘photoluminescence imaging.’
This technique involves aiming a synchrotron beam of light upon the object and in turn measuring the amount of light that is reflected back. Because different materials reflect different amounts of light, it helped the researches identify the exact materials used in the making of the amulet.
The research also reviled that the amulet was cast as one whole piece, leading the researches to conclude the process used to cast the amulet had to be lost-wax casting. With the study published by Nature Communications, you can see the process in the diagram below.
“It is not the most beautiful object, but still it holds so much history.” Mathieu Thoury, Natural Communications lead author told the Washington Post. “It shows how the metalworkers at the time were so innovative and wanted to optimize and improve the technique.”
The amulet itself was excavated back in Pakistan in the early 1980’s.