Hermance Machine Co. is hosting the 2013 Hermance Expo on Tue. May 21 and Wed. May 22 from 8 a.m. to 4 p.m. in Williamsport, Pa.  The Hermance Exposition provides free educational courses on a wide variety of applications including CNC machining techniques and software, sanding machinery selection, abrasive application assistance, moulder setup and knife grinding courses, as well as a wide variety of programs aimed to educate manufacturers of wood, metal, composites, and plastic products.