There's rebuildable atomizers or DIY liquid then. At its most basic, an ecig is made of two devices: a battery and an atomiser. The heating element in the atom

There's rebuildable atomizers or DIY liquid then. At its most basic, an ecig is made of two devices: a battery and an atomiser. The heating element in the atomiser, a coil of resistance wire wrapped around some sort of wick, is consumable. Either the whole atomizer (in the case of a cartomizer) or the atomizer head (in the case of most clearomizers) has to be replaced every few months. Rebuildable atomizers are made so that you can make your own heating coil and wick instead of throwing out the cartomizer or head. There's a lot of technique to making good coils, almost like a craft. It's also possible to mix you own liquid from ingredients.