Do u feel this method is a bit safer compared to guerilla extraction methods?
If by 'guerilla' you mean blowing tubes, than I'd say so. A trade off though. Instead of having the butane from one or several cans mixing with air to possibly ignitable concentrations, you have a higher volume of liquid Butane concentrated inside a steel tank. Things usually burn, not explode, as liquids. So it is as the butane mixes with oxygen in air that is goes from burn to boom.
The few minor leaks I encountered still displace less butane in a run than blowing tubes.
Usually everyone I have read about 'blowing themselves up' was: Sealed up room, with maybe a bathroom fan on, while blowing tubes, oh and then someone decides to light a cigarette.
Personally I am going to eventually set up a blast wall to keep the tanks behind, but when people see a propane tank explode from a bullet they fail to take into account the exit hole created by the bullet, thus giving a large opening for the oxygen to enter as the pressurized tank expels it's contents.
But since butane is without oxygen molecules it is flammable not explosive.
So avoid guns, cigs and booze while operating the machinery :) And dammit, keep that joint at least 25 ft away.
