A sieve. It was designed in a way as to be stackable, and easy to adjust in order to print different meshes. Therefore, there are no horizontal planes, except for the mesh.

The mesh is the infill. By changing the infill in the slicer, you change the mesh. A lower infill percentage means larger holes, and the best shapes are grid and honeycomb.

I included three different sizes: 50mm, 79mm and 100mm. You can easily scale these in the slicer. If you want to make more precise changes, the fusion 360 model was parametrized. You'll find the design here: [https://a360.co/3IctzNS](https://a360.co/3IctzNS)