Install Mainsail OS on Raspberry Pi and set up Klipper on a 3D printer! With this new tutorial on OCinside.de, you can install Klipper with the Mainsail interface on a Raspberry Pi and the special firmware needed to run Klipper on the motherboard of an Anycubic Mega S 3D printer. If you need an introduction to 3D printing, you should first read our 3D Printer Beginner guide.