... any engravable surface hard alloy engraver for glass,china,marble The Signature Engraving Scribe pen is an easy to use engraving scribe, specially ... you a few times.4. After cutting the line, snap it upward from the back .To cut the something thick ,make a crack in ... tap it on the back.5. When drawing lines, hold the pen at 45° angle.Experiment with it to find the most suitable way ...