Clean the inside of both tubing ends with a rat tail file and take a 1" length of a clean and shiny brass 10-32 or 10-24 screw, solder it halfway into each of the two ends. >Original Poster: "David W" <Dav_W926-at-hotmail-dot-com> > > Does anyone have a good method of connecting the ends of copper tubing in a >primary when the primary is made of 2 seperate pieces of copper tubing? > > ~Dave