How a 3D printer works can vary depending on the type of printing it's doing. Use this guide to understand the variations in materials and technique.

3D-rendering of an AR-15 explains how the firearm works. (Screenshot via YouTube) A YouTuber this week posted a video of the inner mechanics behind the oft-polarizing AR-15 rifle.

To take Copilot 3D for a spin, browse to the Copilot 3D website and sign in with your Microsoft account. To get some inspiration, you can view the existing 3D models generated by other people.