My first design, a simple Modern Drinks Coaster! 

A standard 100mm outer diameter, and 6mm height with a slight lip around the edge so you can tell if your drink is seated right – 90mm diameter inner usable space. See full dimensions below.

The raised features stop the coaster sticking to the cup due to moisture or if there is a spill, along with adding some design interest, whilst keeping stable. 

Two PLA profiles uploaded:

• 0.12mm layer height, no ironing, 40% Gyroid infill to slightly increase weight. 23.08g filament, 1hr42m on P1S.

• 0.20mm layer height, top surface ironing, 20% Gyroid infill, 23.84g filament, 1hr25m on P1S.

Both have Random Seam positions as this looks least obvious, however does leave some artifacts on the outer lip which I removed easily using a deburring tool/hobby knife if you are bothered.

Please let me know your thoughts and any improvements! Thanks.