The Printrbot Play (Model 1505) fully assembled 3D fused-filament-fabrication printer with metal frame has an open platform for fabricating parts up to 4 x 4 x 5 inches (W x D x H) using 1.75-mm PLA filament (sold separately). The print head moves on the X (left to right) axis and Z (up and down) axes, while the bed moves on the Y (backward and forward). The print bed is a metal plate and includes an auto-leveling probe that works with the user-chosen computer software to provide a level print surface. The printer uses open source software and connects to the computer using the included micro-USB cable. Using a micro-SD card (sold separately), the printer can be disconnected from the computer after initialization for untethered printing. Maximum resolution of 100 microns. The printer includes a sample of filament.