Limitless possibilities & simple to use! The Polaroid Play 3D Pen can be used by free-drawing 3D models or tracing over a stencil. Simply get started by visiting the App Store or Google Play & downloading the Polaroid Play Trace App to your Smartphone or Tablet. Place the screen protector onto your Smartphone or Tablet & then trace the imported templates & then assemble the parts together to create amazing 3D models. Alternatively, use the unique Polaroid Play Trace App ‘stencilize’ feature to create a stencil from your own photographs & then bring them to life in 3D. Simply Power-up & Play! Connect the USB (Universal Serial Bus) cable to the pen and a power source (DC 5V 2A required) Press the Power Button & wait for the light to turn to blue Insert your PLA Filament Material into the loading hole at the top of the pen & press & hold the Print button to feed the filament through the nozzle Press & release the Print button for continuous printing (the pen will start extruding automatically). To pause simply press the print button again To speed up the extrusion of the filament press the + button; to slow down the extrusion press the – button. You can choose between 4 speed settings To change colour simply press & hold the Power button & replace with one of the 20 fantastic colours available