Elforyn™, a modern synthetic ivory substitute, is very soft and can easily be engraved. The technique is identical to traditional decorative engravings on real ivory, bone, celluloid and plastics. You only need a “pencil” with a hard and sharp end, coloured wax and a scraper. The pencil can be made out of an old and worn triangular file. Shape and sharpen the tip thoroughly with a fine grade grinding stone. Check the sharpness and try to write your name on piece of wasted plastic first. Make sure to engrave the lines equally deep and wide.
Wax is used as a filler. Prepare it by melting it slowly. Be careful not to overheat. Also, …damps can be dangerous! Add some nice colour pigments to the melted wax and stir. Use a scraper to apply the wax on the engravings. Let it dry and scrape the excess off.
A scraper can be made out of an old and worn blade of a hacksaw. Make the edges surface nicely straight and perfectly even. Don’t be afraid to polish it up. Then learn to scrape by holding it almost perpendicular to the surface.
More info on Elforyn™ here: www.elforyn.info