Prior to refilling my lighter I recapped with the video Cheap Humidors posted some time back.

Initially I thought it silly to watch a video on how to refill a butane lighter as I've done this for years as a cigarettes smoker, but figured why not.

Come to find out lighters should be purged, which I had never heard or read before. But I'm lost as to why one ought to turn the gas down to the lowest setting. Anyone?