Workshop Technology
When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used.

Balanced core
Vertical core
Horizontal core
Drop core

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Workshop Technology
Rotary swaging

Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part
Is extensively used for making bolts and rivets
Is used for reducing the diameters of round bars and a tube by rotating dies which open and close rapidly on the work

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