Customizable Coaster

My cup always sweats a ton at work, so instead of using a folded piece of paper/sticky note/whatever I have around me, I decided to make a more "permanent" solution! I created the design in a way that I can pop out the middle and replace the design as I want to. If you want to create your own design, either edit the file "Faceplate_blank", or create a hexagon with a radius of 47.8 mm (to one of the points, not a flat edge) and a thickness of 2mm. This is also the first print I've experimented