Griffin 22 mm by GeekVape evaporator profile. One experiment - 6 months of use. Here are all the files: logo, profile of the material, etc. 2х Ni200 hard 0,35 mm core + Ni200 0,2 , iInner diameter: 3 mm, 7 wraps, Total Ohm: 0,04. Power 60W / 70W preheat, Coton "Bacon" Material profile: custom Ni200.
The Clapton coil should be carefully burned with a small burner. Good burning is the key to success! Here is my review, which is unfortunately not in English: