Summary

This is a larger version of https://www.thingiverse.com/thing:4266646; it has larger ribs with more open space so that more light can emerge from the top. It printed in a little more than 29 1/2 hours using a print speed of 90 mm/sec and a layer height pf 0.200 mm.

There are 2 colors because I mis-judged the amount of blue filament left on the spool and had to switch to another color when it ran out.

This light is designed to hold any one of several LED lights called "puck" lights. You can get these powered by either batteries of wall power. This blog page has links for wall powered lights that work well: http://birkbinnard.com/blog/wall-powered-led-lights/.