Media playback is unsupported on your device McLaren to 3D-print parts at Bahrain F1 Grand Prix trackside
7 April 2017 Last updated at 08:13 BST
McLaren plans to start 3D-printing parts for its Formula 1 cars trackside at Grand Prix competitions shortly.
The firm believes the technology will give it an advantage over rivals allowing it to make last-minute changes.
Working gun made with 3D printer