Rounded Coaster with ridges and catcher

Coasters to protect your furniture from sweaty cups. All of these coasters have ridges to keep water from escaping over the edges and the combo set will catch water in the bottom that can be drained easily. See the example picture of a sweaty cup leaking on my desk! These coasters help avoid this problem. The pictures are examples of PETG prints. PETG is recommended, but should work fine for PLA if you prefer. The outer dimension of these coasters is 90mm with 2mm ridges so a maximum cup base of about 85 mm. You can probably scale this to make it bigger or smaller if you prefer.