Textured Fidget Cube - No Moving Parts

Update 1/12/2025: I added a new version based off of reviews from my own students. The convex side has an extra indent (So now there is a large and small indent side), the ridges have been turned into three rounded ridges  so it's more tactile, and some smaller edits to clean up the print. 

I designed this for a friend. This is a small cube to fidget with that has different textures. My personal favorite is the concave side while his is the circular rivets. The cube measures about 2cm wide. I used 20% infill to make sure it is strong enough to have pressure on each side from fidgeting. 0.2mm print should be fine enough and is what I used in the pictures.