Ruby capped 10mm LEDs, all very organized...
24 VDC at 1 amp LED constant current supply.
Illuminated from below with a 10 watt LED.
An open-ended tube filled with a long stack of plates.
600 lumens is a very good start, at 3,700K.
Sometimes LEDs show color temperature variation that you only notice after you get things assembled.
3 strings of 3 one watt LEDs, happiest in heatsink compound.
