Very cool topic. I have heard that 3D printers will be a part of our future space trips since they will be able to create tools that may be necessary but not present at any time. Sounds very practical since we can't logically plan for every circumstance we encounter in space unless we have a 3D printer to create custom tools on the go.

The applications of a 3D printer are far reaching and exciting. One step closer to Star Trek replicators.