Page 100 - CITS - Fitter Trade Pactical - Volume - 2
P. 100

FITTER - CITS





             Fig 8









              Cooling a drill rapidly by quenching in cold water may cause cracking of the cutting edge.

           Re-sharpening of very small drills requires great skill. They  require proportionally less movement to produce the
           cutting angles.






































































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 CITS : CG & M - Fitter - Exercise 29       CITS : CG & M - Fitter - Exercise 29
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