Buffalo nickels, coins customised with engraving equipment Modifying the reduction models on coins is usually a craft dating back again to the 18th century and nowadays modified cash are identified colloquially as hobo nickels. Knife gravers are for line engraving and really deep cuts. Round gravers, and flat gravers https://trevorvb9oh.blogminds.com/acrylic-engraving-for-dummies-32395983