SpaceX - Space Exploration Technologies Corp
You are on the the International Space Station (ISS) and it's time for the required routine filter replacement, but there's a slight issue - "houston we have a problem we can't find the filter cap". No problem you think, just order another right? Here's the stats on that: Estimated time of arrival is six (6) months on the next supply from Earth costing around $10,000 for every pound of items transported. You know you can fire up the 3D printer back at NASA and have this part completed in 45 minutes, but what about space?