HAND DRILLS/TWIST DRILLS/EXTRACTORS

DRILLS n USED TO TURN DRILL BITS AND OTHER OBJECTS n CAN BE VARIABLE SPEED (VS) –THE FARTHER YOU PULL THE TRIGGER THE FASTER IT GOES n CAN BE REVERSIBLE –FLIP OF A SWITCH n CAN BE BOTH (VSR)

DRILL PARTS CHUCK TRIGGER HANDLE CHUCK KEY

DRILL SAFETY n UNPLUG BEFORE CHANGING BITS n HANG ON FIRMLY n PUSH THE WAY YOU WANT IT TO GO n DON’T OVER-SPEED n LUBRICATE BIT WHILE CUTTING MOST METAL n ALWAYS SUPPORT WHAT YOU ARE DRILLING IN A VICE

SUPPORT IN A VICE

WHY TO HANG ON FIRMLY

PUSH THE DIRECTION YOU WANT TO DRILL

UNPLUG BEFORE REMOVING BIT

OVER-SPEEDING AND OR THE LACK OF LUBRICATION

TYPES OF DRILLS COMMON CHUCK SIZES 1/4”, 3/8”, 1/2” HAMMER DRILL CORDLESS KEYLESS DRILL PRESS

DRILL BITS $109 $145

TWIST DRILLS n COME IN –FRACTIONAL SETS –NUMBERED SETS –LETTERED SETS

SIZING A BIT DRILL GAUGE

EXTRACTORS $65 $30 $19

EXTRACTORS n USED TO REMOVE BROKEN OFF BOLTS –DRILL DOWN INTO BROKEN OFF BOLT –WEDGE EXTRACTOR INTO HOLE –TURN OUT BROKEN OFF BOLT

USING AN EXTRACTOR

DRILLS, TWIST DRILLS & EXTRACTORS QUESTIONS ?