I heard you need to turn down your temp to offset the expected temp if your using it a device which isn't designed to use it in the first place because nickel and titanium have a different coefficient rating. You need to lower your temp by 90f. Also dry cotton will burn at 230c / 440f. So 90f is about 30c so take 230-30 that is what you should use or 440-90. As for your other 2 questions I don't know sorry
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He means 280°F which is already a large offset. (His Waidea can't do °C temps.) I use around 300°F on my Kangxin Mini VFs (same chip as the Waidea.) Sometimes up to 320°F.
@Angel Eyes I am not certain why you are getting singed cotton still. What atomizer? It might be an issue with static resistance in the atomizer, especially as you mentioned using a Subtank Mini which is known for not having the best connection.
If the vape is good and you don't get burnt hits when actually vaping, don't worry too much about the cotton. If 260°F or lower isn't a good enough vape, I wouldn't worry about lowering it and just keep vaping. It's the vape that matters, not the dry cotton test. And singeing is not burning.
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