I think I found my new favorite coil setup for the A7.
Ridiculously low resistance coil (1 ohm is very low for me, I usually like 1.8-2 with cotton), fixed between posts. Coil has to be sparse rather than with touching loops.
Instead of cotton, a very short oxidized SS wick through the coil. My wick doesn't stick out of the coil at all, so it's *really* short.
Thick cotton ball wick laying over the coil, with ends hanging into the bottom of the atomizer to feed the tiny SS wick.
Advantages:
1. If you do let the cotton burn by accident, you can replace it without any tools, since the cotton doesn't need to be fed through the coil.
2. You can dry burn the SS
3. The amount of vapor and flavor is very nice
I've tried this setup before, but with my usual 1.8-2 ohm coils. Somehow presence of SS wick makes it feel a lot cooler than with silica or cotton wick. I learned that from my genesis. Like if I used 1ohm coil with just cotton, the throat hit would be too much for me, and the wick would burn within an hour.
Did I mention low maintenance?