Pick a star with as many points as pleases you most, affix the LED “neon” ribbon into the channel by the method of your choosing.
If you wish to customise - adjust the thickness width or depth of the frame, the outer diameter, the inner diameter - essentially making the star “fat” or “skinny” - download the FreeCAD source file and adjust the parameters in the “dimensions” spreadsheets. The dimensions should be pretty self explanatory. All the stars use the same set of dimensions. Within reason, you can adjust the dimension as you wish.
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