Thanks for your answer. But could you explain "health" issue about dry burn?
well. It's a controversial matter since there arent (as far as i know) specific tests tailored on e-cigarettes. What is well known is that some (well the most actually) materials change significally if exposed to very high Temperature (reached if u glow/dryburn your coil), producing oxides and other substances that are nocive (or not healthy anwyay) and that you MIGHT vape/inhale.
THe matherials that are strongly suggested to NOT Dryburn are Pure Nickel (Ni200) and Titanium (Ti).
The other materials are safer but not 100% safe.
I found some "unoffcial" sources advicing to use NiChrome (Ni80) if you wanna use often DryBurn.
Anyway vaping WITH dryburning is surely less healty than vapin w/o it. That Said if u wanna do it, try to do it at low watts and pulsing and try to avoid to glow the coil like it's xmas time.