Zen Cubes

thingiverse

These cubes feature neodymium magnets within their walls for a unique stress relief gadget. Zen Magnets is a popular brand name for these magnets, and while they're not toys, they make for an entertaining adult pastime. To create the magnetic cubes, place the neodymium magnets into the internal cavities of the cubes before completion, ensuring they are almost finished printing to avoid extruder collisions. Pause the printer over one set of cubes and drop the magnets into the other, carefully monitoring the print process. Note that some extruders may be attracted to the magnets; therefore, it's essential to verify your own extruders for safety.