Nice. I love LEDs. I've been thinking that when I start experimenting with glow in the dark filament I'll use some UV LEDs in a design or two. Maybe just to see how effective a bunch of LEDs generating UV would be in "recharging" the glow in the dark effect after X amount of time.
I was also wondering if you would like to be a moderator in my 3D printing community? /created/hive-103035