In this guide, we’ll show you how to build pair of electronic sunglasses. These are really cool because you can actually control the dark tint from the glass. The 3D printing element of this project are the frames. You can 3D print the bricks using opaque filament on almost any desktop 3D printer. The 3D printed parts can be downloaded with the link below. If you don’t have a 3D printer, the files are free to download so can send them to a 3D printing service.