While they were at it, they created the world's second one, too. One of them is currently on display at the International Air Show in Avalon, Australia, while the other can be seen at the headquarters of French aerospace company Microturbo, in Toulouse.

A team from the Monash Centre for Additive Manufacturing and spin-off company Amaero started with an older gas turbine engine contributed by Microturbo (Safran). Still in working order, the small engine was used for auxiliary power in aircraft such as the Falcon 20 business jet.

Led by Prof. Xinhua Wu, the team proceeded to take the engine apart, and scan all the individual components. Using computer models obtained from those scans, a laser was then utilized to selectively melt metal alloy powder, building up two copies of each component in successive layers. When those parts were subsequently assembled, two metal replicas of the original engine were produced.