Tutorial 4. You can use the following jME 3 project. I’ve recorded 3 short videos on tuning physics. In the first there’s no tuning, so one can see a lot of penetration and tunnelling. In the second, extruded geometries are used, which helps, but still the stem of the flower can get inside the table surface. In the third, physics updates 300 times per second which greatly reduces (but not always fixes) problems.