SpaceX will be bringing the first 3D printer to space on Friday, delivering it to the ISS. Once it’s up and running, astronauts will be able to print new parts for the station and for repairs, rather than wasting precious space storing spares or having to wait for a supply run.
Private companies such as SpaceX and Orbital Science make cargo delivery runs to the ISS every few months, but every inch of cargo space is valuable. If there’s room, then the additional cost is difficult to calculate and depends on the size and mass of the parts being delivered. Generally, though, it costs anywhere from $3,000-$13,000 per kilogram to send objects into low Earth orbit (depending on the rocket and its manufacturer). So the only question regarding having a 3D printer on the ISS is, what took them so long?