I have a 3-U Gorton engraver, and really enjoy using it; plaques are one thing, but with a few accessories, you can make steel stamps, both flat and rotary, can engrave on curved surfaces, graduate scales and dials and many other neat stuff; just for kicks, I one time engraved my name in characters only .013 high, which was nothing! Gorton engraved the Lord's Prayer within a circle .005" in diameter; the characters were .00025" high and only several millionths deep; this was in the late 1930s when the 3-U model was introduced.