What is the most interesting thing you have seen done with a 3D printer or 3D printing technology?

2 things that have impressed me the most this year are the possibility to use real tissue to print human organs alltough further research has to be done. Another thing that has given me a 'The sky is the limit' feeling about 3d printing is the ability to print a house WOW!

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

I allready see a tendency to combine multiple machines in 1 machine. Recently 3d printers that can easily be turned into an CNC machine have come to my attention. This will be the future. An allround machine that can 3d print, CNC machine, food-printing, even printable batteries are under research as whe speak! All of these machines in 1 would be awesome.