Justin’s Infinity Entertaining Cube | ENGI 210: Prototyping and Fabrication

Introduction

For this project, I decided to produce an Infinity Fidget Cube as my impossible object. It qualifies as an “impossible object” because of its integrated hinges. I chose the infinity cube to print because it can be easily resized, and it holds nostalgic value for me—it was one of the first things I ever printed on a 3D printer.

The file can be found at this link: https://www.thingiverse.com/thing:4997903

Printing the Object

I was already quite familiar with 3D printing and chose a relatively simple object, so the project went smoothly. I first printed the cube at full size, which came out well, but it was too large to fit into the capsule. Next, I printed the object at 50% of its original size. This version easily fit in the capsule but left extra space, and the hinges frequently popped out of place. Finally, I printed the cube at 75% size. This version filled most of the capsule while still fitting inside, and the larger size helped keep the hinges more securely in place. In total, I printed four cubes on a Bambu printer and one cube on the Prusa MK4S. Since these prints didn’t require any support material, the only post-processing needed was checking that each cube functioned correctly and removing any stringing artifacts.