Ohio State Buckeyes 3d coaster

I made these 5 inches in diameter, which are usually larger than normal coasters but I also use them for pitchers and bowls. You can obviously resize them. I coated the inside in resin so that the top is flat. My son chose what designs I made the coasters with. These were the first things we made with our 3d printer, so I'm sure they can be improved on.