I hope someone has enough sense to remove those pics of purging with propane,actually all threads mentioning useing it for purging should be removed. that is just plain stupid. bad enough you have to worry about controlling the torch flame,but to dodge fireballs is the most un-professioinal thing Ive seen.Some one going to get hurt !!! if you want to do it fine but don't post it!!! thats MY OPINION. Walt