Christmas Star

The Christmas star has a diameter of approx. 24 cm and is suitable for an E27 lamp socket. However, it can be scaled to any size. It can simply be clipped together without gluing.

Assembly:
First, a base body in the shape of an icosidodecahedron is clipped together from the 6 rings. If an E27 light bulb is used, this base body must be built around the bulb, as the bulb cannot be inserted in later. Starting with ring0, the rings are clipped together as shown in the picture. Five slots with 1-5 notches are marked on ring0. These correspond with the notches in rings 1-5.
The spikes with pentagonal and triangular bases are then inserted into the base body. You will need 20 spikes with a triangular base and 11 with a pentagonal base. One pentagon remains free for the lamp.

Printing:
There is nothing special to consider when printing the rings. All 6 rings fit on a 220x220 buildplate and together take about 12 minutes to print on my Creality K1C
The spikes should be printed in vase mode to be translucent. For stability, however, the lower 6mm should be printed solid. I was able to achieve this by setting the number of bottom layers to 30 in the Creality Slicer (0.2 mm layer hight). I was able to print the majority at a speed of 120 mm/s, but at the top of the spike I had to reduce the speed to 20 mm/s so that the layers could cool down.  Using this parameters a triangular spike took me 5 min and a pentagonal one 9.5 min to print.