Ok so listen up people.....I tried keep on dipping my soldering iron into a little pot of my 'salty' mix of e-juce to see how the black crud would build up on the side of the iron....and as I hoped it built up a crusty light 'grey' crud instead of black....which easily rinsed off under the tap....but now here is the weird thing....I can't seem to make any 'black' crud build up on the side of my soldering iron any more if I use normal e-juice!!! ....I don't understand why at all..WTF! ...has the salt left some sort of coating on my iron that the stuff will not stick to or what! ....I can't see what's happening to the coils on my penstyle....perhaps someone with a visible coil could try out a slightly salty mix of e-juice.