2:00 pm April 21, 2016 By Julian Horsey YouTuber Tinkernut has created a desktop 3D printer using a 3D printing pen and a little skilful tinkering for the affordable price of just $65.

Discover How to Create a Watermelon House with a 3D Pen for Your Pet Rat or Hamster! In this tutorial, we'll guide you through the process of designing an extraordinary watermelon-themed house using a ...

It consists of a frame which holds a 3D-printed cam turned by a hand crank. That cam controls the movement of a pen in two dimensions, letting it draw all manner of shapes.