Cup coaster

Coaster for a cup with a cold drink. Fits styled to the pencil cup - https://www.printables.com/en/model/231717-pencil-cup. Lower part prepared for printing in Vase Mode ("Spiralize Outer countour" in Cura). I have a 0.4 mm head, but in Cura I set ("Line Width") to 0.5 mm. We print the top and middle part as normal. Inside, in order to prevent the growth of microorganisms, you can put a little salt.