Page 69 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

Fig 1

Fig 2

During grinding: Take a blunt chisel for re-grinding. Chisels will become blunt due to use. For efficient chipping,
chisels are to be re-sharpened regularly.

Do not use cotton waste or other material for holding the chisel while grinding.
Use only the face of the wheel and not the sides (Fig 3)

Fig 3

Switch on the grinder.
Hold the chisel edge parallel to the wheel surface; the body of the chisel must be at an angle of 30° in such a way
as to get 60° wedge angle. (Fig 5)
Rest the body of the chisel on the tool rest (A) (Fig 5) and allow the point to touch the wheel. (Figs 4 & 5)
Keep the pressure as minimum as possible to prevent excessive heating of the cutting edge, (avoid blue colour
i.e. annealing effect).

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CITS : CG & M - Fitter - Exercise 18