This 3D Printing Pen Draws Spheres Instead of Circles!
![This 3D Printing Pen Draws Spheres Instead of Circles!](https://jetplanesandchampagne.com/wp-content/uploads/2018/07/3doodler-1-min-418x315.jpg)
Since the dawn of civilization, humans have been attracted to beautiful things – art. This fascination manifested itself as carvings/paintings on flat surfaces, cave walls, and even eggshells. Around the same time, people started to…