Difficulty: Easy
Correct Answer: The heel is that part of the tool which is shaped to produce the cutting edges and the face.
Explanation:
Concept/Approach
Standard lathe tool terms: the face (rake face) is where chips flow; the flanks are relief surfaces below/adjacent to cutting edges; the nose is the joining arc/chamfer; the base of shank bears on the tool post; the heel is the lowest portion of the flank near the base—not the part shaped to create the cutting edges (that shaping defines the tool point).
Why option (c) is incorrect
The part shaped to produce edges/face is the cutting point and rake/relief geometry, not the heel. Therefore (c) is wrong; the other statements reflect standard definitions.
Final Answer
The heel statement (option C) is incorrect.
Discussion & Comments