What's the use of an internal groove turning tool and a 45-degree left elbow turning tool?

The inner groove turning tool can process the withdrawal groove, overtravel groove or inner cavity in the inner hole.

The 45-degree cutter has a wide range of uses, which can be used for turning excircles, inner holes, end faces, chamfers and so on. And the cutter head has high strength and can be rotated powerfully. The disadvantage is that the root can not be cleaned, and the radial force of the workpiece is large, which is not suitable for finishing the step shaft or slender shaft.