Spherical Turning on a Manual Lathe

The video tutorial explains how to machine a ball handle using a manual lathe. It covers the need for custom-sized spanners, the process of adding an axis to the lathe, and the geometrical features of a ball handle. An alternative method for ball turning is also discussed, along with the final steps of machining and threading the handles.

What is the primary reason for machining ball handles manually?

• They are more durable when made manually.

• They cannot be purchased in the required size.

• It is a traditional method.

• Manual machining is faster.

What are the three main geometrical features of a ball handle?

• A small ball, a cylindrical shaft, and a threaded end

• A large ball, a cylindrical shaft, and a flat end

• A large ball, a small ball, and a tapered shaft

• A large ball, a small ball, and a threaded end

Why is a marker pen used during the machining process?

• To indicate the end of the machining process

• To measure the diameter of the shaft

• To observe the point of full sphere formation

• To mark the center of the large ball

What is a disadvantage of the alternative approach to machining ball handles?

• It takes longer to complete.

• The finish is not as good.

• It is more difficult to set up.

• It requires more expensive tools.

How is the thread tapped into the ball handle to ensure it is perpendicular?

• By rotating the handle manually

• By tapping it into the flat

• By holding the handle at an angle

• By using a special jig