Wine - A Gentle Balance

You have seen these things all over the place. They won't stand up on their own but put a bottle of wine in the hole and - like magic - it stands up.

These are easy to make and you can make all kinds of shapes and use woods that are beautiful but too small for other things.

The important dimension is the distance from the edge point to center of the hole and the 36 degree angle. The 1 1/4 inch thickness is not mandatory but sort of a minimum.  

There is some real math involved here in calculating the force vectors and weights. The idea is to get the center of gravity just right with a bottle in place. So you could change the angle but that would mean you have to change the distance to the center hole.

Experiment with some scraps and see what you can come up with.