Coaster with a japanese wave pattern loosely based on the idea from [https://www.thingiverse.com/thing:4823069](https://www.thingiverse.com/thing:4823069)

Put a color change in at 2.00 and 3.80 to use different colors. If you use Octogram Spiral as the top and bottom fill pattern you have a nice pattern on the bottom.
I uploaded the PrusaSlicer File for more information.

When changing the openscad file reduce the $fn value to something like 10 to ensure faster processing time. Increase it again before exporting it to a stl.
If you want bigger waves change the waveWidth Parameter in the OpenSCAD file.

Infill: 

15

Filament:
Prusament PLA Galaxy Black + Bronze 
 

Notes: 

Put a color change in at 2.00 and 3.80 to use different colors. If you use Octogram Spiral as the top and bottom fill pattern you have a nice pattern on the bottom.
I uploaded the PrusaSlicer File for more information.

Printed on a Prusa Mini