The ordinary method of producing the cutting edges after turning the cutter and serrating it, is to cut away the metal with a file or rotary cutter of some kind forming the cutting edge to correct shape, but paying no regard to the shape of the back of the tooth more than to give it the necessary amount of clearance.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose
He selected a bough the size of a thick walking-stick; sawed it off the tree; sawed a piece six inches long off it, peeled that, split it in four, and, with his knife, gave each piece three points, by merely tapering off and serrating one end; and so he made a fork a minute.
"Foul Play"
Charles Reade Dion Boucicault