The old style Christmas lights...the big ones...do get very hot.
Yes these are the ones I suspect that Electrobes was refering to. I know the very small ones that are out barely get hot at all because of their use on Real Trees...that is all I was replying for... The blue that I have is actually close to the same color as the LEDs.. Just takes more of them to get any kind of good light, and then using all of them is too bright LOL
... It is better to use the LED
lights since they heve become standard... I think you are right about the copper leads coroding..That would be a mess..