What is the most interesting thing you have seen done with a 3D printer or 3D printing technology?
The most interesting thing i saw done is a fully printed vehicle. It was only one that you could ride via straddling and didn't go very fast. But, it was the first example of what one could do with lots of modeling and dedication. inspired me to get a 3d printer.

- If you could build your dream 3D printer, what would it include and what would it do? Let your imagination run wild!

Huge, first off. Massive build area. Interchangable nozzles, kind of like microscopes, large nozzles for huuuuge prints but rotates around to a smaller size for the fine details. in-line filament changes. something that automatically switches out filaments for use so you can have multi-mutli color prints, all with one fancy, integrated nozzle. fully heated, of course. cameras all around to watch the build process.