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A rake is an angle of slope measured from horizontal, or from a vertical line 90° perpendicular to horizontal.

Rake angle is a parameter used in various cutting and machining processes, describing the angle of the cutting face relative to the work. There are three types of rake angles: positive, negative, and zero. Positive rake angles reduce cutting forces and power requirements; negative rake angles increase the strength of the cutting edge; and a zero rake angle is the easiest to manufacture.