Ender 3 Gantry lightbar

Update 2/3/19 - Added an even deeper version, since I could still see the LEDs when looking at the printer from my desk.

Loved the gantry LED light design I found from s4lfish, but there was a lot of glare, so I borrowed the idea to recess the lights from SPS-3's top mounted LED light bar and came up with this. I would however recomend sanding the inside of the bottom edge of the recess, because it is pretty reflective, at least in black PLA. I would also recomend using some superglue to he