Rocketry is wild, and [Foaly] is sharing build and design details of the Cortex 2 mini rocket which is entirely 3D printed ... changes included tweaking the shape and reducing weight, and ...

Modifying the shape of gun propellants could make bullets that can fly farther. I showed that it is possible to 3D-print solid rocket propellants that have similar properties to traditionally made ...

The immediate advantage is that this allows the rocket to be shipped as flat sheets of material, but as a secondary bonus, once folded into its final shape the ... ve been 3D printed in either ...