Here is LEGOMakerBot 3D in action:
The machine is made from LEGO MINDSTORMS EV3 (31313) with additional bricks, nine motors and sensors.
You can find more details and building instructions at:
Thank you Will for making this wonderful project and sharing it! Kudos Sir!
|Lego bricks 3d printer - a work of DIY art|
Here is different Lego bricks based 3d printer, the Legobot, that uses hot glue gun to print: