Simple wooden “magical” wine bottle holder

I wanted to try out this very simple “magical gravity defeating” wine bottle holder or whatever its name actually is. I made it without thinking much of calculations and angles. Just browsed some pictures and trusted my gut. I used 18mm thick and 95mm wide plank.

Unfortunately- it’s only cool to try. I don’t trust this enough to put it actually in use. Needs a very rigid and stable surface to put on. A casual table is probably not safe enough due possible shaking. This needs more base or something, so it would not tip over too easy.