Hey guys I have been vaping for a while now but i wanna learn how to build my own coils. I want to start building subohm coils, and i know you need to know alot before that so can you please give me some tips and pointers. I have an igo-w on a k101 for one setup and a freakshow atty on a ragnarok mod for another. My batteries are 2 sony vtc 5's, an efest 1600 mah, and a lg 2500 mah i think.