This is a radar reflector with an overall diameter of 15 cm. The triangular leafs are 1 mm thick and 5 cm high, which have been pasted with aluminum adhesive tape to obtain the reflecting surface.
Hereafter the parts list for printing a whole radar reflector (as shown in the image):
* 1 center
* 6 cap
* 8 plate
* 12 leaf
For fixing the plates to the center 2.5 x 8 mm screws are needed.