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A planer is a type of metalworking machine tool that uses linear relative motion between the workpiece and a single-point cutting tool to cut the work piece.[1] A planer is similar to a shaper, but larger, and with workpiece moving, whereas in a shaper the cutting tool moves.
- ^ Parker, Dana T. Building Victory: Aircraft Manufacturing in the Los Angeles Area in World War II, p. 73, Cypress, CA, 2013. ISBN 978-0-9897906-0-4.