http://www.centricut.com/New_Lessons..._training.htmlhope it will be an interesting reading...http://www.metalwebnews.com/howto/plasma/evolution.pdfhttp://www.metalwebnews.com/howto/plasma/theory.pdfhttp://www.metalwebnews.com/howto/pl...esentation.pdfhttp://www.metalwebnews.com/howto/pl...-problems.htmlhttp://www.lincolnelectric.com/knowl...ent/plasma.asphttp://www.millerwelds.com/education...rticles55.htmlhttp://www.millerwelds.com/education/video_library/http://www.millerwelds.com/education...ingplasma.htmlhttp://www.millerwelds.com/education...asmamaint.htmlhttp://campbelldesigns.net/http://www.tenlinks.com/http://www.mossdesigns.com/http://www.plasmacuttingonline.com/Unit in my fab shop dept:my good hand and team that trust me...A lone welder make art... a village full of welder make Miracles...