Folks, I've been wondering about shielding the UV output of my sparkgap. I'd like to be able to see the light of the gap, but not worry about the UV. I asked at TAP Plastics, and they said they had clear, UV coated acrylic for $6/ft. Has anyone tried using this sort of thing on a sparkgap? It's probably intended for the sun's rays, do you think it would protect from the sort of UV power a sparkgap puts out? thanks, paul