About this 3D model
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.