Looks simple, but it’s actually a very tough thing to make. Metal engraving takes a lot of effort and pain. But the completed work will make all your efforts worthwhile. Engraving tools are available at Raja Market - Bangalore, not many shops have them. Also the sheets are really thicker than embossing sheets. They are available near S.P. Road behind the mosque(Aluminium thick sheets). Unlike embossing, engraving sheets are thicker and have to be framed to a board before one start the work. While framing one should make sure there are no air gaps because if the sheets are not tightly framed it make result in holes while engraving. Hope I could share some of my knowledge.