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@Butters
10 wrap microcoil of 0.25mm kanthal round a 1.5mm drill bit might come out to about 1.2 ohms. Then thread some cotton wool through it and leave plenty in the tank. The narrow microcoil should mean you use a small enough strand of cotton to leave room for air flow between the cotton and the wick hole. You'll have to attach the positive wire after you put the tank back together if you see what I mean. I don't have all that much experience with cotton in gennys though!
I'm chuffed to have built something decent in my Kraken today:
Dual microcoils on ss rope with the core removed and a mesh wrap to provide a flat surface. It's come out to 0.7 ohms, with tons of vapour and flavour. Bet it hotspots tomorrow morning whilst I'm having my coffee. Yuck.