This is a flange for the hole on a bean bag game. It has a outside diameter of 8", an inside diameter of 6" and a height of about 1/2 in (12 mm). You can check out all the dimensions on the illustration. I made the wood boxes according to directions from Wayne of the Woods http://wayneofthewoods.com/beanbaggame.html The holes are cut out a little larger than 6" with a jig saw. The coloured flange cleans up the appearance. This is my first try with OpenSCad. You will find the source file included to make your own flange.I could not print the whole flange on my Replicator 2 in one shot so I print the same piece twice (2 halves).