jim said a long time ago to me that: welding pipe ought to be done with the pipe soft as possible. and i begin thinking about how pipe is softer in the summer than in winter, and how friction creates heat. anyway before I go on too long with all the theorys. wouldnt a full turn (or perhaps even more) be better "welding" than solely a quarter turn? I dont think a quarter turn is enough friction to bind the two pieces into one (or atleast is inferior to a full turn, IMHO.