12mm RGB Pixel Tree Star

This tree topper holds 7 12mm RGB Pixels (1 in each point and 2 in the center). The thin walls act as diffusers, producing a nice soft glow. 

I printed this in white PLA, but any semi-opaque material should perform well. I would avoid translucent materials, as these will show off too much of the insides. All 3 parts print well without supports, but are best printed one-at-a-time to avoid exterior scarring and stringing. A brim is recommended on the shells to prevent lift-off, as parts are quite large and the bed contact area is small.

Once printed, insert the seven pixels into the inner ring (see photo). Test fit with the two shells to make sure everything lines up well. Finally, glue the shell together (there is no need to glue the inner ring in, it will be held in place). Make sure your wires are coming out of the hole in the bottom; fishing them out is nearly impossible after gluing. One leg is longer than the other - this is to facilitate easy tree attachment. Just slip the tube over the vertical top branch of your tree and use a small clip or some white cable ties to attach it securely to the long leg of the tube.

My original design can be found here on OnShape, where you are free to copy and edit the source. Do be aware of my CC-Share Alike License.