Fair warning before you print I am new to Blender and 3-D modeling in general, However, I tried this and it printed pretty well. The hardest part was making sure the bottom surface was flat, so you don't get weird supports underneath. My only remaining concern is the scale. I couldn't confirm that it was the right size to match a golf hole regulation size. If you download this, before you print, you might scale it up or down so that the inside diameter of the hole sits at 108 mm or 4.25 in. That is regulation for a golf hole. Otherwise good luck, the angles and slope proved to be a challenging putting practice. I hope you like it. Please share pictures if you print this thing and like using it