The idea is to make a printable tree topper. This part is just the base and all different tops to it could be printed as long as they fit over the cylinder at the top of the base.Cylinder at top of mine has a radius of 1/8" (diameter is 1/4"). and a height of 5/16"The overhangs print fine for me, but I'm still working on tuning my printer to print the top cylinder properly. Right now I have to trim it with a knife when it finishes printing.