Positive rake angle is given for machining of:

Tool geometry is the study of the angles and slopes of the edges and faces of a tool at its cutting point. It has been used since ancient times to help understand how machines work. In more recent times, it has been used in aircraft manufacturing to design more efficient and higher quality production lines. Tool nomenclature is the systematic naming of the various parts and angles of a cutting tool. The surfaces on the point of a tool have a definite relationship to each other that is defined by angles. The cutting edge is the edge on the face of the tool that removes material from the... Show more

Tool geometry is the study of the angles and slopes of the edges and faces of a tool at its cutting point. It has been used since ancient times to help understand how machines work. In more recent times, it has been used in aircraft manufacturing to design more efficient and higher quality production lines.
Tool nomenclature is the systematic naming of the various parts and angles of a cutting tool. The surfaces on the point of a tool have a definite relationship to each other that is defined by angles.
The cutting edge is the edge on the face of the tool that removes material from the workpiece. The cutting edge is made up of the side cutting edge, the end cutting edge, and the nose

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