Manufacturing And Production Technology
In a gating system, the ratio 1: 2: 4 represents

Pouring basin area: ingate area: runner area
Sprue base area: ingate area: casting area
Sprue base area: runner area: ingate area
Runner area: ingate area: casting area

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Manufacturing And Production Technology
The chamfering is an operation of

Reducing the diameter of a workpiece over a very narrow surface
Embossing a diamond shaped pattern on the surface of a workpiece
Enlarging the end of a hole cylindrically
Beveling the extreme end of a workpiece

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