Originally Posted by
ItsJustMe
I've tried that. It does work but not as well as you'd think. I suggest using metal fwiw. Electrical tape on a high powered light will just fall off due to the heat pretty quickly. I cut a small semicircle of flashing that fit over the lens and behind the bezel.
Someone else employed this trick when devising his anti-glare guard on his dynolight set-up.
See post #79 in this thread from the Commuting forum.