Velo3D is one of the best ways to invest in SpaceX's production ramp, since spending from SpaceX's IPO capital will flow down to whoever prints its engines. Its Sapphire printers make complex propulsion parts without support structures, and it is qualified on five current Raptor parts and the next-generation Raptor 4. Customers also include Anduril, Lockheed Martin, General Dynamics, Aerojet Rocketdyne and the US Navy, Army and Air Force. x.com x.comÂ