ENGRAVER WORKS FLAWLESSLY. VERY EASY TO OPERATE, NO EXPERIENCE NECESSARY. HAVE HAD IT A COUPLE OF MONTHS USED IN MY MANUFACTURING BUSINESS AND IT IS IN USE ABOUT 40 HRS PER WEEK HAVE NEVER HAD A PROBLEM ENGRAVING ON METAL, ALUMINUM, STAINLESS, GLASS, EVEN LEATHER !! GREAT BUY. VERY HAPPY WITH MACHINE QUALITY.