According to a press release from the European Space Agency (ESA) on August 6, 2024, the metal 3D printer aboard the International Space Station has achieved a historic first by printing metal components in space. This accomplishment marks a significant advancement in the ability to manufacture parts in microgravity, offering promising new capabilities for long-duration space missions to the Moon and Mars.

Previously, plastic 3D printers have been utilized on the ISS, but metal printing introduces numerous advantages over plastic materials. Metal parts can offer greater strength, durability, and a wider array of applications, making them essential for complex space missions.

The metal 3D printer, launched on January 30, 2024, aboard the NG-20 “Cygnus” cargo spacecraft via a SpaceX Falcon 9 rocket, was installed in the Columbus module of the ISS. Following its arrival in space, the printer began a series of tests. The first successful print, which occurred on May 30, 2024, was an S-shaped test piece.

In addition to the August successful prints, the metal 3D printer is expected to produce a total of four research components. Two of these will be returned to Earth and sent to ESA’s ESTEC Technical Centre in the Netherlands. Another component will be used in ESA’s LUNA lunar simulation facility at the astronaut training center in Cologne, Germany, while the final piece will be transported to the Technical University of Denmark.

As missions venture further from Earth, the challenge of resupplying spacecraft becomes increasingly complex. 3D printing technology offers a solution by enabling on-demand production of necessary parts or replacements for faulty components, reducing reliance on redundant supplies and resupply missions. This advancement not only supports long-term space exploration but also underscores the growing importance of in-space manufacturing capabilities.