:D "In the Latin text, Java begins with an "I".
Update Ver1.1 Fixed bug outer hoop won't turn off. Also separated sample stl file to separate stl files for inner and outer hoop. Of course don't forget you can customize this with customizer.
-Fold a round coffee filter into quarters and open one layer forming a cone.
-Add some coffee grounds to the cone to taste.
-Press coffee filter cone between the inner and outer hoops.
-Set "Iava" pour over device over a coffee cup.
-Slowly drizzle hot water through the grinds in the filter. Avoid getting the water/coffee on the plastic.
-Enjoy some coffee.
If you choose you may fold and staple several filters with grinds for later use. Put them in a zip lock. Ummm, you should remove the staple and form it back to a cone again before you use these.
It is designed in openSCAD, files included (Fix puking previews by Edit/Preferences/Advanced/ForceGoldFeather).
This also works with Customizer, look for it in the apps tab above (Customiser needs 3rd party cookies though :p ).