Use and Care Manual

ManualsBrandsMilwaukee ManualsDrill0300-20

12 13

APPLICATIONS

WARNING

To reduce the risk of explosion,

electric shock and property

damage, always check the work

area for hidden pipes and wires

before drilling.

Selecting Bits

When selecting a bit, use the right type for

your job. For best performance, always use

sharp bits.

Drilling

1. Before drilling, be sure the workpiece is

clamped securely. Use backing material

to prevent damage to the workpiece

during breakthrough.

2. When starting a hole, place the drill

bit on the work surface and apply ﬁ rm

pressure. Begin drilling at a slow speed,

gradually increasing the speed as you

drill.

3. Always apply pressure in line with the bit.

Use enough pressure to keep the drill

biting, but do not push hard enough to

stall the motor.

4. Reduce pressure and ease the bit

through the last part of the hole. While

the tool is still running, pull the bit out of

the hole to prevent jamming.

Drilling in Wood, Composition Materials

and Plastic

When drilling in wood, composition materials

and plastic, start the drill slowly, gradually

increasing speed as you drill. When using

twist drill bits, pull the bit out of the hole

frequently to clear chips from the bit ﬂ utes.

Use low speeds for plastics with a low melt-

ing point.

Drilling in Masonry

When drilling in masonry, use high speed

carbide-tipped bits. Drilling soft masonry

materials such as cinder block requires

little pressure. Hard materials like concrete

require more pressure. A smooth, even ﬂ ow

of dust indicates the proper drilling rate. Do

not let the bit spin in the hole without cutting.

Do not use water to settle dust or to cool bit.

Both actions will damage the carbide.

Drilling in Metal

When drilling in metal, use high speed steel

twist drills or hole saws. Use slow speeds

for hard metals and high speeds for softer

metals. Lubricate drill bits with cutting oil

when drilling in iron or steel. Use a coolant

when drilling in nonferrous metals such as

copper, brass or aluminum. Back the ma-

terial to prevent binding and distortion on

breakthrough.

Cat.

No.

0100-20

0101-20

0200-20

0201-20

0202-20

0299-20

0300-20

0302-20

No Load

RPM

Wood

Hole

Saws

3-1/4"

2-1/4"

3-1/4"

3-5/8"

Auger

Bits

7/8"

1-1/2"

Flat Boring

Bits

1-1/2"

1-1/4"

1-1/2"

NR = Not recommended

0 - 2500

0 - 4000

0 - 1200

0 - 2500

0 - 1200

0 - 850

Twist

Bits

1/4"

1/2"

3/4"

Path-

ﬁ nder

Bits

1-1/4"

Self-feed

Bits

2-9/16"

Steel

Hole

Saws

1-5/8"

Wood/Steel

Bit Binding

A high rotational force occurs when a bit

binds. If the bit binds, the tool will be forced in

the opposite direction of the bit rotation (See

Fig. 12-14). Bits may bind if they are mis-

aligned or when they are breaking through a

hole. Wood boring bits can also bind if they

run into nails or knots. Be prepared for bit

binding situations.

To reduce the chance of bit binding:

• Use sharp bits. Sharp bits are less likely

to bind when drilling.

• Use the proper bit for the job. There

are bits that are designed for speciﬁ c

purposes.

• Use caution when drilling pitchy, knotty,

wet or warped material or when drilling

in material that may contain nails.

Driving Screws

When driving screws, use the proper screw-

driver bit for your job. After drilling pilot and

shank holes, start the screw slowly and

increase the speed as driving progresses.

Set the screw by slowing to a stop. Do not

run screws down at excessive speeds. To

remove screws, reverse the motor.

Stalling

If the tool seems as if it is about to stall, main-

tain a ﬁ rm grip and reduce pressure slightly

to allow the bit to regain speed. If the tool

does stall, release the trigger immediately.

Reverse the motor, remove the bit from the

work and start again. Do not pull the trigger

on and off in an attempt to start a stalled drill.

This can damage the drill.

Fig. 12

Forward rotation

Reaction

Bracing against the ﬂ oor

Fig. 14

Bracing against a stud

Reverse rotation

Reaction

Forward rotation

Fig. 13

Forward

rotation

Bracing against your leg

Reaction

Typical Bracing Methods

WARNING

High rotational force. To reduce the

risk of injury, always hold or brace

securely. Always use side handle on

tools rated 1200 rpm or less.