Good tip, thanks!
And, that reminds me about something that, I believe, I have mentioned previously... but it should be mentioned again.
If any of you who have a star ceiling get black lights to charge up the paint... and find that the paint just doesn't seem to charge the paint well, please make sure that the plastic cover that is over the black light tube is removed. You want the black light tube to be uncovered by anything. For some reason... even that clear, plastic cover blocks out the good light that charges the paint.
I drove a couple of hours (When I was back in the area) to check on a ceiling that I had painted the previous year. I had worked with the customer to try and figure out why his room full of good black lights weren't charging his ceiling. I told him that when I was on the east coast again that I would make a trip out to see him.
I was on the east coast and drove a couple of hours to where he was and couldn't wait to see how the ceiling was not glowing. We went into his theater room and he told me that his light had been on for hours (like 10). So, he turned the lights off and... nothing! Seriously, nothing. Well, I do think I saw one star glowing faintly. We sat there discussing how it glowed perfectly when I had painted it and shown him.. but by the time he'd ordered his lights and then installed them... that somehow it lost it's glow.
Well, I was just about to suggest that I paint the mural over again for him... when I remembered another time that I took the cover off of my work black light and it made an amazing difference. I asked him if he had left the covers on the lights... and he told me, "yes." We then removed the covered and turned the lights on for about 5 minutes. When we turned the lights back off... there was the mural, just as it was the day I'd painted it. I was sooooo happy that I didn't have to paint that LARGE ceiling again!!!
I also had a customer who'd charged her stars for years with a blacklight... but when it broke, she bought a new one. A couple of months had passed since the old one broke and the new one was purchased (she was traveling)... and when she charged the mural with the new light... nothing! WE discussed what might have happened and eventually I asked if she still had that clear, plastic cover on the light. She did. She removed it and the mural was visible again.
So, please remove the covers.
Originally Posted by darrellh44
One thing to remember (which I assume you know but others may not) is that LED UV lights has a lens over the emitter that focuses (directs) the light with a certain dispersion angle. Old-sytle fluorescent tubes are unidirectional and don't have to be aimed.
I won't be able to test anything until you make your next TX trip.