Unlike standard printers, a 3D-printing machine reads the design from an .stl file and lays down successive layers of liquid, powder, or sheet material to build the model from a series of cross sections. These layers, which correspond to the virtual cross sections from the CAD model, are joined together or automatically fused to create the final shape. The primary advantage of this technique is its ability to create almost any shape or geometric feature. Continue reading to see more cool (though not always safe) things made with 3D printers.

7. 3D-Printed Plane

6. 3D-Printed Violin

5. 3D-Printed Home

4. 3D-Printed Flute

3. 3D-Printed iPhone Case

2. Urbee 3D-Printed Car

1. 3D-Printed Gun