Polygon Physics was represented at the biennial Plasma Surface Engineering (PSE) conference in Garmish-Partenkirchen from September 13 through September 15 2016. Very well organized, and an especially lively industrial evening, with good food and drinks, brought many visitors to our booth. We had an ion source with accompanying vacuum system for live demonstrations of an ion beam made of air molecules. It was a great pleasure to hear Peter Sigmund speak about ion sputtering.