Coaster for Brita water filter

My Brita water filter seems to always drip slightly when I fill it. This the is not good for my wooden table. So I wanted a coaster for the water filter, so designed one quickly in Freecad. (coaster size inside rim 151x90 mm) This is why we love to have a printer at home 😊 See a problem and work on a solution. This should help protect the table when I restore it (again) 🙃 Printed well without any special settings on my A1. Let it cool before removing it (otherwise it might warp)