Golf Cup Insert

A 3d printed insert for golf putting cups which allow an artificial surface to be glued to the top. I installed an artificial green in my yard, but wanted a way to make the surface solid all the way for the family to play bocce ball on. These also have been good so no one accidently steps in a cup when snow is covering the green. I randomly added holes to the model to help facilitate any drainage. So far they have worked awesome. When a user steps on them they are solid and have lasted outdoors through a Chicago winter so far.