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MIT's mobile 3D printer built the largest structure to date
Your next house could be built by a robot. Following the recent success of San Francisco-based startup Apis Cor, a team of MIT researchers have created a mobile autonomous 3D printer of their own. And to prove that the prototype works, the team had it build a 12-foot tall, 50-foot-wide igloo out of quick-setting foam -- the largest such structure made by a robot to date.
Here's how you make a 3D printing gun using Lego
What do you do if you want to 3D print in any direction, but can't buy a pre-made pen like the 3Doodler? If you're Vimal Patel, you build your own. He melded a hot glue gun with a powered Lego mechanism (really, Technic) to extrude filament in any axis. To call it bulky would be an understatement, but it works -- as you'll see in the video below, it can produce fairly complex objects as long as you have a keen eye and a steady hand. And if you want to try it, you can. Patel has posted his Lego Digital Designer file for the 3D printing gun, so it shouldn't be too hard to replicate the invention at home.
