Page 97 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

A coolant container is provided for frequent cooling of the work. (Fig 2)

Adjustable work - rests are provided for both wheels to support the work while grinding. These work - rests must
be set very close to the wheels.
Extra eye - shields are also provided for the protection of the eyes. (Fig 2)

Fig 2

Re-sharpening a twist drill
Objective: At the end of this exercise you shall be able to
• state about resharpening a twist drill.

• A twist drill can be successfully sharpened on a bench or pedestal grinder by adopting the following preocedure.

• Check that the surface of each wheel is running true and that the wheels are dressed clean.
Ensure that the tool-rest are adjusted correctly and tightened.

• Wear safety goggles.

• Stand in a comfortable position in front of the machine.
• Hold the drill at about one quarter of its length from the point, between the thumb and the first finger of the right
hand. (Fig 1)

Fig 1

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CITS : CG & M - Fitter - Exercise 29