Built a dual coil using .32mm wire wound over 3mm, 7 wraps came out at 0.6ohms. I don't really like it. Used less wick at first but the vapour wasn't that great. Used more wick and maybe a little better, not much. I got more vapour and a better vape with a single 1.7ohm coil. I've never gotten good performance from dual coils. Don't know where I'm going wrong. The coils are even, same number of wraps and placed in the right positions.
This thing should be chucking the vapour. I mean I'm getting vapour, sure, but surely it should be better than the single coil build, or maybe not. I'm firing it at max 30 watts. If it's not as good as a single coil then what's the point I wonder.