My latest project:
Here I have used 6 ultraviolet LEDs (395 nm) in the wand:
The wand plugs into a small power supply which keeps the wand's output constant regardless of battery strength:
The wand is designed so that the fly, mounted in my vise, will sit right in the middle of the ring. A 5 to 10 second burst of UV completely and evenly polymerizes a 2 cm long nymph body coated with CCG. (My bottle of CCG is very old and I suspect a shorter UV treatment would be needed with fresh resin.)
Next I think I will build a slightly bigger wand with two rings set a few cm apart for curing larger flies like bass bugs, etc. Since the wand plugs into the power box, I could have a handful of wands ready for any situation imaginable. Truly Plug-N-Play!