Great 3D Puzzle

Since I already had the other 3D puzzle by Ravensburger, it was clear for me to order again this puzzle. I was not disappointed. This puzzle is the way to the supreme puzzle out of line. Still, it's rather unknown because Ravensburger seem to advertise only for 4 current 3D Puzzle. Anyway, it is about to see an one of the best 3D puzzle of the series, since it can be set up quickly, easily and stably. The nice thing is that it has a very smooth / smooth surface without bumps. For this purpose, I recommend setting up a small ruler and a level surface such as a table. Then you can complete the puzzle "smooth out" by placing the outside on the table and the inside smooth strokes with a ruler.
I would give this puzzle an absolute buy recommendation!