A cast iron piece of total length 100mm is needed to be tapered for a length of 40mm using swiveling the compound rest method. Diameter of job is 20mm and smaller end have nearly zero diameter. What should the angle in degrees by which compound rest should be rotated?

A lathe is a machine tool that removes unwanted material from a workpiece to create a desired shape and size. It's used primarily for shaping metal or wood. A lathe works by rotating the workpiece around a stationary cutting tool. The cutting tool removes unwanted material from the workpiece to form the desired shape. A lathe can perform various operations such as cutting, sanding, knurling, drilling, deformation, facing, and turning. With suitable attachments and modifications, a lathe can be made to perform any machining operation. Lathes can create objects that are useful, precise, and... Show more

A lathe is a machine tool that removes unwanted material from a workpiece to create a desired shape and size. It's used primarily for shaping metal or wood. A lathe works by rotating the workpiece around a stationary cutting tool. The cutting tool removes unwanted material from the workpiece to form the desired shape.

A lathe can perform various operations such as cutting, sanding, knurling, drilling, deformation, facing, and turning.

With suitable attachments and modifications, a lathe can be made to perform any machining operation. Lathes can create objects that are useful, precise, and beautiful. They can be used to create objects of art and jewelry.

There are three types of modern lathes: center lathe, bench lathe, and engine lathe.

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