I posted this in the main thread but I'll add it here too.
I came up with this build last night and after a sloppy first attempt I've loving this.
This is using 30awg and I wrapped them around a toothpick that I broke in half. There is not a lot of room to work with but with some patience it fits.
I wrapped the coils on the center of the toothpick, took them off and torched them and quenched them a few times. The top coil still separated a bit due to how you have to mount it , but there's no hot spots and it lights up well. After getting them nice and right insert the pointy end of the tooth pick and push until you feel just enough resistance to hold it in place, it makes pulling it out much easier.
Place the bottom coil in and have the leads coming off the top of the coil because it needs to stay low so it doesn't touch the top coil. Wrap the leads around the posts to keep them in place. The put the top coil on and have the leads come off the bottom. There is not a ton of room between the coil and the bell so you probably don't want it any higher than I have it. I leave my leads really long when I wrap coils so for the top coil I can pass them around half way and being them back the other way and pin them in place against the tube. Then with those pinned down you can snug up the bottom leads and tighten down the screws. That part is a little annoying because the toothpick the top coil is in will be in the way.
For a wick I just take one strand of SnC yarn and pull it half to have two wicks consisting of two individual strands. Pull them through with a bit of kanthal and trim them to the right length.
This build is definitely annoying to get right. There is very little room between the airhole in the deck and the two coils to not have anything touching , but for me it's the best build I've had in the Heron by far. Both coils being right above the airhole in the deck is much better than having them side by side and level. The flavour and vapour is just fantastic.
