Delta CL180JS Instruction Manual download pdf (Page 10)

DRILLING WOOD

In addition to the instructions listed under GENERAL DRlLLlNG, the following

also apply:

1. When using twist drills in wood, they should be withdrawn from the hole

frequently to clear chips built up in flutes to avoid overheating and burning

work.

2. If a backing block is used to keep back of work from splintering, it should

be clamped securely in place. If a backing block is not used with spade bits

or hole saws, ease up pressure as soon as bit point breaks through work, and

complete the hole from the opposite side.

DRILLING METAL

In addition to the instructions listed under GENERAL DRlLLlNG, the following

also apply:

1. Use only good quality sharp high speed steel twist bits when drilling

metal.

2. Start drilling with slow speed and gradually increase speed as drill cuts.

The harder the material, the slower the speed required. The softer the mater-

ial, the faster the speed.

3. When drilling a large hole, it is easier to first drill a smaller hole and then

enlarge it to the required size.

4. The use of a lubricant, such as oil, on the drill point helps keep the bit

cool, increases drilling action and prolongs drill bit life.

3. Set REVERSING BUTTON for clockwise rotation.

4. Make sure work is held securely in vise or clamped in place

prior to starting drilling operation. Loose work may spin and cause bodily injury.

5. Locate exact center for hole to be drilled and using a center punch, make

a small dent in work.

6. Place tip of drill bit in dent made by center punch, hold drill square with

work, and start the motor.

7. Applying too much pressure may cause the bit to overheat

or break resulting in bodily injury or damaged drill bits.

Apply steady, even pressure to keep drill bit cutting. Too little pressure will

keep the bit from cutting and dull the cutting edges due to excessive friction

created by sliding over the surface.

Always be alert and brace yourself against the twisting

action of the drill.

8. If drill stalls or becomes jammed in the hole, release trigger immediately,

remove drill bit from work and determine cause of stalling or jamming.

DO NOT SQUEEZE TRIGGER ON AND OFF IN AN ATTEMPT TO

FREE A STALLED OR JAMMED DRILL – THIS WILL DAMAGE THE MOTOR.

The direction of rotation may be reversed to help free a jammed bit. Be sure

direction of rotation is RESET before attempting to continue drilling.

9. Reduce the pressure on the drill just before the bit cuts through the work

to avoid splintering wood or stalling in metal.

10. When bit has completely penetrated work and is spinning freely, withdraw

it from the work while the motor is still running, then turn off drill.

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Delta CL180JS Instruction Manual Page 10

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