There is a rapidly growing subculture of e-cigarette users across the globe who spend countless hours tricking out their hardware. Vape modding, as it's known, blends technical craftsmanship, engineering creativity and artistry into one -- and unbeknownst to most, it originated right here in the UK. Some do it to get better hits, while others do it to give their e-cigs a unique look. The modders are also the staunchest of users, who credit vaping with allowing them to kick the tobacco habit. But as I found out, through the process of modding, these ex-smokers may have just traded one addiction for another.