Testing and modeling different geometries. This one can be used as a tealight...
7Corner Structure. Bends one time horizontaly on the outside surface but not on the inside. This small manipulation results in an interesting star shape! I Like it a lot!
No need for supports. Scale it in the slices accordingly (model on the photos = 1100% = 12x12cm 10cm high)
The author hasn't provided the model origin yet.