I am attempting something that i havnt seen people do, i have a pair of Alien Ni80 coils that ive been using for months now, they have gotten to the point where there black, after being heated they become a semi orange color. When i was young i used to put metal objects into Coca Cola and they would come out like new so i put the coils in Coca Cola. I plan on rinsing the coils in hot water after there done to get the Cola off but i wana see if it works. I dont have a coil brush and ive tried using scolding hot water but it just dosnt seem to produce the results im looking for, i also always have coca cola laying around. I tried to look this up on Google and found nothing so im testing myself, i also didnt know where to put this because im new to the Forum. For all i know i could be destroying the coils right now but once everything is done and ive tested them ill probably update on how well it worked.