Take a Deep Breath if You Want to Try Competitive Vaping

They begin tuning up their devices like drag racers tuning hot rods before a race. They twist resistant wire into coils to carry electricity from their vaporizer’s battery, and weave dry cotton through the coils. The cotton acts like a wick, soaking up e-cigarette juice so the coils can heat it as electricity loops through them.

→ The Wall Street Journal