This flowerpot coaster uses as less filament as possible if you use the default settings. A coaster with a diameter of 180mm needs only 40 grams.

My printer does print this model water tight with the default settings. If you want to be sure to have it 100% tight or you printer does it not print water tight, then better set the “extrusion multiplier” to 1.2, then the printer squeeze 120% filament in the model.

You need freecad and the small nice workbench “dynamicData” installed:

1. download and open the freecad file
2. select “dimensions” and change values:

    3. select the model and use from file menu the export function to generate a stl file: