The document describes the Drona Cuby 3D printer. It has a build size of 200x200x200mm with a precision of 27 microns in XY and 50-200 microns in Z. It uses FFF technology with a single 0.4mm nozzle and can print with materials like PLA, ABS, wood filament, and more. The Cuby has a RAMPS-based control board and can be operated via Slic3r, Cura, and other software on Windows, Linux, and Mac OSX systems.