These are Infill Samples for teaching and showing.

They are infill sample files for the following infill types:

Archimedean Chords Concentric Gyroid Hilbert Curve Octagram Spiral

The files are named 15% and 30%, however you can print them at any infill percentage that you like.

There is also a blank sample that you can change the infill in the slicer of your choice. Or you can upload it to Tinkercad and add the name of the infill.