IME violent spitback can in many cases be avoided by trying a numer of other tweaks first before jumping to the early conclusion that going for different coils is always the most feasible option. If the coils are Nichrome 80, you can dry fire the coils repetitively over the course of multiple dry firing sessions giving everything the time it needs between sessions to cool sufficiently back down again so that nothing gets overheated in the process... rub a few drops of water around the side of the build deck from time to time just to be sure, if necessary. If you tend to wick up your coils fairly lightly, I suggest using a bit more cotton on the inside of the coils (and still be able to somewhat thin out the tails after, by very gently pulling loose fibers out from the trimmed edges and then finally trimming them an additional time). Another thing is the airflow setting. By closing off two rows of airflow holes (pic below) you can get the type of moderate restrictiveness that, in cohort with fairly powerful fast pulls lasting only about 2 seconds or less, creates enough underpressure inside the chamber to get the jets of air to shoot straight in and slam right into the coils forcefully enough that the coils don't overheat despite aiming for higher wattages. Doing this can not only transform a seriously too hot vape into a normal, warm, vape. It can actually even also help to get spitback under control especially when taking all the aforementioned factors also adequately into account. For reasons that are obvious, however, not everyone likes to use powerful fast inhalation techniques. Just that, if you, like me, have the─and I will apologize for the fact I'm doing it on purpose once again like usual─
cojones to give that a shot, then you might be in for a pleasant surprise. Or you might not... ?
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Quad core 26/36 Ni80 aliens at 3mm ID dual coil = .08 ohms, or kicking around 168 watts:
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