[Slant 3D] knows a lot about optimizing 3D prints so that they can be cranked out reliably with minimal need for post-processing, and in this short video he uses a cube as a simple example of how a few design changes can not only optimize for production, but can even hide layer lines pretty effectively.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/03/04/design-tips-to-hide-layer-lines-in-3d-printed-parts/