DRILL AND DRILLING MACHINE
U.Kumar.......................+91 9867241975 INDIA
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PARTS OF TWIST DRILL
TWIST DRILL ANGLES
SHARPENING OF TWIST DRILL
DRILLING MACHINE
DRILL- HOLDING DEVICES
WORK- HOLDING DEVICES
CUTTING SPEED & RPM
FEED
DRILLING MACHINE OPERATONS
DRILLING DEFECTS AND CAUSES
CUTTING FLUIDS ( COOLANT )
DRILLING MACHINE
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