I just did a fairly large diameter coil on my kayfun. Wound on a torx bit, so in the macro range. 12 turns. ~2.4 ohms. Its very mellow and great tasting at 20 watts. Lots of coil, so I need quite a bit of heat. I wish I had the means to measure it better, but I kinda just threw it together with what I could find in my toolbox. Thoughts?