Rake (angle)

Content sourced from Wikipedia, licensed under CC BY-SA 3.0.

Rake angle is the angle of a sloped surface measured relative to a horizontal or vertical reference. It shows how steep the surface is: 0 degrees means flat, 90 degrees means vertical.

Common uses:
- Machining: the rake angle is the tilt of a cutting tool’s face relative to the work surface, which affects cutting effort and chip flow.
- Geography and surveying: describes the incline of land features such as ramps, roads, or hills.
- Architecture and construction: describes the slope of roof lines or stairs.

Rake can be positive or negative, depending on whether the tool face tilts away from or toward the material.