This is a solid blank ear and base for the interchangeable ear tutorial on this site: https://simplymadefun.com/interchangeable-mickey-ears

More details on construction can be found at the above link.

I wanted to make some blank ears for kids to paint themselves. The magnet slot is 8 mm by 3 mm. You may want to use a slightly smaller magnet for less post-processing.

The print settings can be whatever you usually use!