Poinsettia Rose Window Cup Coaster
This cup coaster is designed to be used with a 1/8 inch thick 3 inch diameter plastic or glass insert. You can find places to purchase the inserts anywhere you like, but here are a couple options if you choose to use them:
United States Plastic Corp. - Plexiglass inserts
Jubilee Creative - Glass inserts
The design is based off of gothic architecture rose windows. I have 7 other designs to choose from as well:
https://www.shapeways.com/product/6C5B2Z5SY
https://www.shapeways.com/product/A8USTWQLR
https://www.shapeways.com/product/XXGYB55EH
https://www.shapeways.com/product/8SYABEN6D
https://www.shapeways.com/product/4QM5UD5V4
https://www.shapeways.com/product/26QGA6NSE
https://www.shapeways.com/product/RRJC6WBJK
Short coaster holder (holds 4 of this coaster):
https://www.shapeways.com/product/U8XRQCZWN
Tall coaster holder (holds 8 of this coaster):
https://www.shapeways.com/product/UPW8ECM8G