Stereographic Projection plus a few tips

Stereographic Projection based on the excellent work shared here:
https://jasmcole.com/2014/11/01/stereographic-lampshades/#more-650

I used Blender's "Solidify" modifier to add various thicknesses to this model for printing. I recommend printing one of the three thicknesses that provided here and oriented upside down for printing.

I printed the middle thickness version (Stereographic_Production_mid.stl) with a wide brim and a 56 degree support overhang which seemed about right to support the arms as they got longer. I lowered the rim into the bed to crop the rim by 0.2mm for better contact with the bed and I also moved one axis by one degree to align the three tips better. The print came out nicely and after carefully removing support for a couple minutes, I used it with my cell phone flashlight and found that it works acceptably but a Maglite 2 AAA LED flashlight with the top off (candle mode) is an amazing light source.

I think this design is OK as is but could still b