A slightly more tame version of sling casting is centrifugal casting, where the flask is placed horizontally in a centrifuge, which uses similar action to pull metal into the mold.

The reality, though, is quite the opposite. Investment casting, sometimes called “lost wax” casting, is a manufacturing technique that dates back nearly 6,000 years.

Johnne Lee, 31, is a self-taught metalsmith who uses the lost wax casting technique. The technique is a dying art in Singapore, though Johnne keeps the craft alive with his daring and whimsical works.