Wanna have different top surface patterns? Of course you do. Try this test part with only 33g of filament you can both see and feel the surface and test it on different light conditions. Here is an overview:

Concentric: Diagonal + look. Shines different the way you look.

Rectilinear, monotonic, monotonic line, aligned rectilinear: Looks similar. Monotonic line is the default but monotonic makes it a single extrude.

Hilbert curve: Rough surface.

Archimedean chords: Except for the middle looks and feels smooth.

Octagram spiral: Like concentric diagonal but with a star look. Shines different the way you look.

Print the top part with light filament (white in my case) in order to see the surface with detail. A1 mini is supported as well. The bottom base part is printed with monotonic line. AMS, single color and pause filament change versions are available.

You can double click the bottom plate to change its top surface pattern from the object→strength→top/bottom layers part.