3D Printers, how do they work? (like magnets?)

Take a look at this video:

I am a bit surprised how it detect moving parts scanning the tool.


In the near future where the prices will be lower and the distribution will be for regular customers ... what will you create?

I have some ideas ...

Waiting for these products become widely deployed, you can build one:

RepRap: http://reprap.org/wiki/Main_Page