I received my Wismec Theorem from VapeSourcing today. I was interested in this atomizer because it was inexpensive and offered a unique design. Although I'm intrigued by the notch coils they just don't seem compatible with my style of vaping. I mostly use 18350 AW IMR batteries in mechanical mods or in a Provari Mini. The .25ohm notch coil is simply too low of a resistance for me to safely use with an 18350 battery or for a Provari to fire. I have a bunch on 18650 batteries that I could use, but .25ohm is simply too low for me. I have an IPV D2, but with no step down, I'm afraid that the vape will be too hot for my liking.
So I figured that I would simply build my own coils for the Theorem around 1.2ohms which is what I typically use. However, one thing that I really don't like about the post design is that it seems that you need really long coil legs if you want a single coil to be centered with both wick ends dropped into the tank. The notch coil avoids this by using welded nickel legs, so I figured that I would try to do the same.
I have a lot of experience building coils for submersible atomizers like the Killer, Diver, and Sophia that use CE2 ceramics where you're supposed to use legs of non-resistance wire. I have a wire welder that I built that I use to weld nickel to Kanthal coils so I decided to make a coil for the Theorem in this way. The notch coil has an inner diameter of 5.5mm. The closest rod that I could find was a screwdriver with a diameter of 4.2mm, so I decided to use it. I made a spaced coil using 27awg Kanthal and welded 32awg Nickel legs to it. I was concerned that 27awg Kanthal would require too much ramp up time and I exceeded my target resistance a bit, so I'm going to make another coil tonight, but I've included pictures of my current coil below for your viewing pleasure.
My coils:
My build:
My Theorem: