Im not sure if it would still work with the same efficiancy (I think I spelt that wrong). All depends how much you use.
actaully i wrapped my cathode in cellophane it was originally untinted so it gave of a bright cherry pink colour around a few layers of red cellophane it gives off a much deeper red than other cathode's orangey-red colour http://www.members.optushome.com.au/jq3k/cmod/1.jpg
Don't bugger about with cellophane.. You'll end up with crap eveywhere, you'll end up replacing it pretty darn soon, and it will eventually look pretty tacky. Go find yourself a professional show/event lighting supplier. Buy yourself a sheet of gel - it's basically heat-tolerant, heavily dyed (so it won't fade quickly), thick cellophane, but it's specifically designed to be chucked in front of 10w to 2kw lamps. That'll do the trick. Also, gels come in LOTSA fun colours.. whoever you get it from should have a colour chart for ya. It'll cost a fair bit more, but it will be worth it in the long run. I've seen cellophane wrapped around a cathode tube (not directly on the tube, around a cage about half-an-inch from the tube) melt, start smoking and *almost* catch fire. not the sorta thing i'd want in my case
Why would you want to wrap cellophane around a cold cathode for anyway? My cold cathodes dont get that hot, but they do get warm to the touch.
He wants to use the cellophane to change the color of the cold cathode. normal red cathodes are more orange than they are red. With a couple of layers of red cellophane he can tint the color of the cathode to be more red than it was to start with. I was thinking about the same sort of thing using yellow cellophane to turn half of my blue cathode green. It would make the case look a little more interesting and give off the effect of two cathodes. I think the previous statement about gels was right though. I have worked with gels in theatre situations and they dont melt at all. We had a 2k watt spotlight with one over it. Not only did it completely change the color of the light but also the heat had no effect on it. I think I may be looking into a similar concept with project phantomime Nick
Ok, but I wouldnt want to use cellophane. I'd use the Gel sheets that have been mentioned. I've seen someone use the Gel sheets to change the colour of one end of their cold cathodes. You can also now get cc's that are dual and even tri-colour: http://www.sunbeamtech.com/products-MultiCCFLs.htm I've only got Blue and UV CC's in my case though.
