dry burn: take off head cap, remove wicks, typically I then rinse the coil out, then dry it nicely on some paper towels..
attach it the battery, set it on low volts, fire it up...2 seconds at most...then let it cool....fire up 2 seconds again...let it cool a few seconds....do this a few times
then after its fired a few times and maybe glows a little, ill rinse it again, dry it off and dry burn it again
after that, a final rinse/dry it off...put it back together with some cotton wick, prime the wick w/ juice...assemble tank
makes for a lot nicer vape experience
also in my blog is a post about rebuilding Kanger heads and what tools i piled up ( a few simple things) to make it easier on me...stock Kanger heads can suck and esp when the vape is burnt and tastes like crap. I rebuilt my coils, put in cotton and BOOM! vapor.
when it starts to taste like crap, out goes the wick - then rinse it all off, dry burn, rinse etc..get it nice and clean then new cotton
the really hard part in doing the coil rebuild is getting that coil set just so that its low enough in the head that the cap can fit on and not touch, but high enough that it wont let juice in and leak/gurgle. i was setting mine too low (look at that notch for the wick, mine was halfway below that! not good!) ...and getting a bad vape/gurgles. now the bottom curve of the coils just dips below that notch when you view it from the side. its low enough that it wont touch the top (I use a 2mm screwdriver from a Harbor Freight screwdriver set, think I link to it in my blog post iirc).
rebuilding coils is fun, and it helps a ton. oh ima poet \o/