When you go for a long road trip, it’s wise to take a spare wheel with you just in case. Of course, it makes the car heavier and takes much space. Imagine, if it’s possible to take a 3D printer with you instead and print any replacement automotive-grade parts when needed. Sure, that it takes much space too, and you will need materials for it. So, it’s not reasonable for a car travel, but can be very handy in a space travel. The Chinese producers of such an advanced 3D printer capable of printing spaceship parts in space claim that the invention can significantly reduce the cost of reaching space and carrying out missions.