https://pligg.samweber.biz/story.php?title=materials-engraved-with-a-laser-2 The use of lasers for engraving has opened the field to many more uses. Traditional hand tools and early engraving machines were limited in scope. Hand tools, such as various knives, Florentine liners, and a steel tool called burin, tear delicate materials and are ineffective on others. Machines use heat and friction to cut the surface of the items being engraved. Anything that burns or melts easi Fri, 23 Feb 2018 19:52:55 UTC en