A brief overview of the bombarding process and explanation of 12mm tube "laybacks" or "side seals" or "Butt Joints" Call them what you will, I also give a brief overview of my manifold, bombarder and vacuum pump system before bombarding a tube while explaining my steps and process. I finish the tube by dumping the mercury and removing the tubulation (tipping off). I even talk about some other industry bombarding practices and tendencies.