Question 143General Subjects - QMED

The correct answer is A) nose angle. The nose angle is the angle between the tool face and the work surface at the very tip or nose of the lathe tool bit. This angle is important for determining the cutting characteristics of the tool, such as its ability to produce a smooth finish on the workpiece. The other answer choices are not correct because: B) working relief angle refers to the angle behind the cutting edge that provides clearance for the tool to move freely. C) side rake angle refers to the angle of the tool face in the horizontal plane. D) side relief angle refers to the angle behind the cutting edge in the horizontal plane.