Drill Master Drill Doctor 500X User manual

Model 500X
Model 750X
User’sGuide
Guía del Usuario
Mode d’emploi
500X & 750X
500X& 750X

Thank you
...for purchasing a Drill Doctor®.It is sure to become a
valuable tool because you will always have sharp drill bits
before, during, and after a project.
As President of this company, I am very proud of the qual-
ity of our products—and I am equally proud of the great
people at Professional Tool Mfg./ Drill Doctor®who
design and produce them. If you have questions or need
help with your Drill Doctor®,please contact us and one
of our Customer Representatives will be there to help. We
support what we build!
Use this User’s Guide to learn to operate your Drill Doc-
tor®quickly and easily. I’d also like to invite you to visit
our website at www.DrillDoctor.com.There you will find:
•Demonstrations of all operations with the sights and
sounds leading to successful drill bit sharpening
•Downloadable copies of this User’s Guide
•Warranty registration
•Service and contact numbers
Again, thank you for buying a Drill Doctor®.Now go
enjoy its convenience and quality.
Hank O’Dougherty
President, Professional Tool Manufacturing

www.drilldoctor.com 1
English
Contents
English...............................................................1
Important Safety Instructions...................................2
Getting to Know Your Drill Doctor®.........................9
Identifying Basic Drill Bits......................................10
Anatomy of a Drill Bit .............................................10
The Drill Doctor®Sharpening Process ..................11
Choosing Your Drill Bit Point Angle on the
Model 500X.......................................................11
Model 750X.......................................................12
Aligning the Drill Bit...............................................12
Sharpening the Drill Bit ..........................................14
Identifying Correctly Sharpened Drill Bits..............16
Split Points..............................................................17
Creating or Replacing a Split Point.........................18
Identifying Correctly Split Bits ...............................19
Grit Tube Attachment..............................................20
Sharpening Bits of Different Lengths, Diameters and Types
Large Drill Bits .................................................20
Short Drill Bits and Bits Smaller than 1/8" ......21
Masonry Drill Bits.............................................21
Using the Variable Alignment to Adjust Chisel
and Relief Angle ...............................................23
Using the Variable Material Take-Off on the 750X...24
Questions and Answers ...........................................25
Drill Doctor®Maintenance.....................................28
Accessories and User-Replaceable Parts.................31
Warranty .................................................................32
Español ............................................................33
Français............................................................70

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IMPORTANT SAFETY INSTRUCTIONS
For Your Own Safety Read Instruction Manual Before
Operating Tool; Wear Eye Protection.
Precautions
When using electric tools, basic safety precautions should
always be followed to prevent the risk of fire, electric shock,
and personal injury.
•KEEP GUARDS IN PLACE and in working order.
•KEEP WORK AREA CLEAN. Cluttered areas and bench
invite accidents.
•DO NOT USE IN DANGEROUS ENVIRONMENT. Do not
use power tools in damp or wet locations or expose them
to rain. Keep work area well lit. Do not use tools in the
presence of flammable liquids or gases.
•KEEP CHILDREN AWAY. All visitors should be kept safe
distance from work area.
•MAKE WORKSHOP KID PROOF with padlocks, master
switches, or by removing starter keys.
•DO NOT FORCE THE TOOL. It will do the job better and
safer at the rate for which it was designed.
•USE THE RIGHT TOOL. Don’t force tool or attachment to
do a job for which it was not designed.
•USE PROPER EXTENSION CORD. Make sure your
extension cord is in good condition. When using an exten-
sion cord, be sure to use one heavy enough to carry the
current your product will draw. An undersized cord will
cause a drop in line voltage resulting in loss of power and
overheating. The Drill Doctor ®has a 1.75 ampere rating
(.4 ampere in E.U; .74 ampere in Japan). Therefore, when
choosing an extension cord, please select cords of the fol-
lowing gauge:
—a 25 foot cord must be at least 18 gauge
—a 50 foot cord must be at least 16 gauge
—a 100 foot cord must be at least 14 gauge
—a 150 foot cord must be at least 12 gauge
If in doubt use a heavier gauge. The smaller the gauge
number, the heavier the gauge.
•
WEAR PROPER APPAREL. Do not wear loose clothing,
gloves, neckties, rings, bracelets, or other jewelry which may

www.drilldoctor.com 3
get caught in moving parts. Nonslip footwear is recommend-
ed. Wear protective hair covering to contain long hair.
•ALWAYS USE SAFETY GLASSES. Also use face or dust
mask if cutting operation is dusty. Everyday eyeglasses
only have impact resistant lenses, they are NOT safety
glasses.
•
USE EAR PROTECTION DURING USE. The Drill Doc-
tor ®can generate up to 91 dB [A] and 90 dB [C] noise
emissions when in operation. The Drill Doctor ®can gen-
erate up to 17.0 m/s2[RMS] vibration when in operation.
•SECURE WORK. Use clamps or a vise to hold work when
practical. It’s safer than using your hand and it frees both
hands to operate tool.
•DO NOT OVERREACH. Keep proper footing and balance
at all times.
•MAINTAIN TOOLS WITH CARE. Keep the Drill Doc-
tor®clean for best and safest performance. Follow
instructions for maintenance and changing accessories.
Inspect cords periodically and if damaged have them
repaired by an authorized service facility.Inspect exten-
sion cords periodically and replace if damaged. Keep unit
dry, clean and free from oil and grease.
•DISCONNECT TOOLS before servicing. Always discon-
nect the Drill Doctor ®when cleaning, inspecting, and
changing accessories, such as the diamond sharpening
wheel. When not in use, disconnect from the power sup-
ply. Never touch internal parts of the sharpener when it is
turned on or plugged in. The rotating diamond wheel can
cause injury.
•REDUCE RISK OF UNINTENTIONAL STARTING. Make
sure switch is in the “OFF” position before plugging in.
•REMOVE ADJUSTING KEYS AND WRENCHES. Form
habit of checking to see that keys and adjusting wrenches
are removed from tool before turning it on.
•USE RECOMMENDED ACCESSORIES. Consult this man-
ual for recommended accessories. The use of improper
accessories may cause risk of injury to persons.
•NEVER STAND ON TOOL. Serious injury could occur if
the tool is tipped or if the cutting tool is unintentionally
contacted.
•CHECK DAMAGED PARTS. Before further use of the

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tool, a guard or other part that is damaged should be care-
fully checked to determine that it will operate properly
and perform its intended function. Check for alignment of
moving parts, binding of moving parts, breakage of parts,
mounting and any other conditions that may affect its
operation. A guard or other part that is damaged should
be properly repaired or replaced by an authorized service
center unless otherwise indicated in the instruction man-
ual. Have defective switches replaced by an authorized
service center. Do not use the tool if the switch does not
turn it on and off. Do not use if the grinding wheel is dam-
aged. Use only grinding wheels recommended by Drill
Doctor ®.
•NEVER LEAVE TOOL RUNNING UNATTENDED; TURN
POWER OFF. Don’t leave the tool until it comes to a com-
plete stop.
•
STORE IDLE TOOLS. When not in use, tools should be
stored in a dry, locked-up place out of the reach of children.
•DO NOT ABUSE THE CORD. Never yank the cord to dis-
connect it from the socket. Keep the cord away from
heat, oil and sharp edges.
•STAY ALERT.Watch what you are doing, use common
sense and do not operate the tool when you are tired.
•HAVE YOUR TOOL REPAIRED BY A QUALIFIED PER-
SON. This electric tool complies with the relevant safety
rules. Repairs should only be carried out by qualified per-
sons using original spare parts; otherwise this may result
in considerable danger to the user.
Grounding Instructions
In the event of a malfunction or breakdown, grounding pro-
vides a path of least resistance for electric current to reduce
the risk of electric shock. The Drill Doctor® is equipped
with an electric cord having an equipment-grounding con-
ductor and a grounding plug. The plug must be plugged into
amatching outlet that is properly installed and grounded in
accordance with all local codes and ordinances.
DO NOT MODIFY THE PLUG PROVIDED. If it does not
fit the outlet, have the proper outlet installed by a qualified
electrician.
Improper connection of the equipment-grounding con-
ductor can result in a risk of electric shock. The conductor

www.drilldoctor.com 5
with installation (having an outer surface that is green with
or without yellow stripes) is the equipment-grounding con-
ductor. If repair or replacement of the electric cord or plug is
necessary, do not connect the equipment-grounding conduc-
tor to a live terminal.
Check with a qualified electrician or service personnel if
the grounding instructions are not completely understood, or
if in doubt as to whether the tool is properly grounded. Use
only 3-wire extension cords that have 3-prong grounding
plugs and 3-pole receptacles that accept the tool’s plug.
Repair or replace damaged or worn cord immediately.
USA Only
This tool is intended for use on a circuit that has an outlet
that looks like the one illustrated in Figure A following. It
has a grounding plug that looks like the one in Figure B fol-
lowing. A temporary adapter, which looks like the adapter
illustrated in Figures C & D following, may be used to con-
nect this plug to a 2-pole receptacle as shown in Figure D if
aproperly grounded outlet is not available. The temporary
adapter should be used only until a properly grounded outlet
can be installed by a qualified electrician. The green-colored
rigid ear, lug, and the like, extending from the adapter must
be connected to a permanent ground such as a properly
grounded outlet box.
Fig. A
Fig. B
Fig. C
Fig. D
Cover of
Grounded
Outlet Box
Cover of
Grounded
Outlet Box
Grounding Pin
Grounding
Means
Metal Screw
Adapter

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1. Read all these instructions before attempting to operate
this product and save these instructions
2. Guard against electric shock, avoid body contact with
earthed or grounded surfaces.
3. Use the right tool, do not force small tools to do the job
of a heavy duty tool, do not use tools for purposes not
intended ( for example do not use this unit to sharpen
anything other than standard twist bits)
4. Use marked outdoor extension cord leads when the tool
is used outdoors.
Safety Markings
15,000 RPM 110-120V – 60Hz – 1.75A max / 0.77A nom
-or- 220-230V – 50Hz – 0.88A max / 0.4A nom
AC Only All electrical symbols
Tool mass including detachable parts.
DD500X/750X Mass: 2.65 lb = 1.202 kg
DECLARED DUAL-NUMBER NOISE EMISSION
VALUES in accordance with ISO 4871
Declared noise emission value:
Ld = L + K, where the maximum K = 3.0 dB (per ISO 11201)
Manufacturer: Professional Tool Mfg.
Model: DD500X/750X
Rated Input: 89w Hz: 60 Source: 115VAC
A-weighted emission sound pressure level, LpA
(ref. 20 µPa) at the operator’s position, in decibels:
Un-Loaded : 84.1 Loaded : 86.8
Uncertainty, KpA,in decibels: 3.0
At 1m Distance: Un-Loaded: 81.2 Loaded: 81.2
Peak C-weighted emission sound pressure level,
LpC,peak (ref. 20 µPa) at the operator’s position, in decibels:
Un-Loaded : 81.2 Loaded : 91.4
Uncertainty, KpC,peak,in decibels: 3.0
At 1m Distance: Un-Loaded: 81.7 Loaded: 84.1

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DECLARED DUAL-NUMBER NOISE EMISSION
VALUES in accordance with ISO 4871
Declared noise emission value:
Ld = L + K, where the maximum K = 3.0 dB (per ISO 11201)
Manufacturer: Professional Tool Mfg.
Model: DD500X/750X
Rated Input: 92w Hz: 50 Source: 230VAC
A-weighted emission sound pressure level, LpA
(ref. 20 µPa) at the operator’s position, in decibels:
Un-Loaded : 76.9 Loaded : 89.7
Uncertainty, KpA,in decibels: 3.0
At 1m Distance: Un-Loaded: 71.9 Loaded: 76.0
Peak C-weighted emission sound pressure level,
LpC,peak (ref. 20 µPa) at the operator’s position, in decibels:
Un-Loaded : 77.4 Loaded : 87.8
Uncertainty, KpC,peak,in decibels: 3.0
At 1m Distance: Un-Loaded: 72.7 Loaded: 75.0
Ref-0072
WARNING:
Some dust created by power sanding, grinding, miscella-
neous construction activities, as well as contents from the
machine including the molding, wiring, grinding wheel, or
any other parts may contain chemicals known to the State
of California to cause cancer, birth defects or other repro-
ductive harm and can be hazardous to your health.
WARNING: DO NOT EXPOSE TO RAIN
OR USE IN DAMP LOCATIONS.

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Installation
•Carefully unpack the Drill Doctor®Drill Bit Sharpener
and set it on a table or workbench. Check to see that no
damage has occurred during shipment. Check all pack-
ing material to be sure that all parts are present (see
the part identification diagram in this User’s Guide).
See User’s Guide for part identification diagram.
•This tool is completely assembled; the Drill Doctor®
only needs to be placed on a flat stable tabletop.
•Connect to properly wired outlet.
Service
For service in the USA, contact:
Professional Tool Manufacturing
210 E. Hersey St.
Ashland, OR 97520
USA
Phone: [phone]
FAX: [phone]
Email: [e-mail]
For service in Canada, contact:
DARPRO
115-A, De Vaudreuil, Local 2
Boucherville, Quebec
Canada J4B 1K7
Phone: [phone]
FAX: [phone]
Email: [email protected]
Outside North America, contact:
Ets V Dehaye sa-nv Brinkmann + Wecker GmbH
Rue G Moreaustraat, 57 Postfach 6106
B-1070 Brussels Einsteinstr 8
Belgium D-33104 Paderborn
Phone: [phone] Germany
FAX: [phone] Phone: [phone]
Email: [e-mail] FAX: [phone]
Email: [e-mail]

www.drilldoctor.com 9
Getting to Know Your Drill Doctor®
Cam Guide
Sharpening Port
Power Switch
and Cord
Grit Tube
Chuck
Point Angle
Adjustment
Plate
Bit Clamp Arms
Drill Stop
Split Point Guide Rails
Split Point Port
Splitting Guide
Chuck Jaws
Chuck Knob
Cam
Adjustable Material
Take-Off (MTO) Knob
(750X Only)
Point Angle
Adjustment
Knob
Alignment Button
Wheel
Access Cover
Diamond Sharpening
Wheel (Inside)
Alignment Guides
Sharpening
Guides
Alignment
Port
Relief Angle
Settings
On 750X
MTO is here
Masonry Bit
Alignment Mark

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Identifying Basic Drill Bits
The Drill Doctor is most efficient when used to sharpen a
drill bit’s original point angle. With its standard Diamond
Sharpening Wheel it will sharpen high-speed steel, cobalt,
TiN-coated, carbide and masonry drill bits.
It has been designed and engineered to sharpen three of
the most common drill bit types and offer the ability to
customize the bit point:
Standard Point
This general-purpose point is
used for drilling softer mate-
rials like cold rolled steel,
aluminum, and wood.
Split Point
Split-point bits are self-cen-
tering and are generally used
for tempered steels, hard
alloys or hard cast materials.
Anatomy of a Drill Bit
Chisel Edge It is important to understand
that each bit has all of these
characteristics.
Cutting Edge
Heel Relief
Angle When viewing a well-sharp-
ened bit from the end, the
entire surface from the Cut-
ting Edge to the Heel will
have a finely ground surface
without ridges or indenta-
tions. The Heel will always
be lower than the Cutting
Edge.
Cutting Edge
Heel
Masonry Bits
Masonry bits have a carbide
insert at the point and are
used for drilling materials
like cement, brick, and
ceramic.

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The Drill Doctor®Sharpening Process
The sharpening process includes 4 easy procedures:
1. Determine the type and angle of the drill bit.
2. Align the bit in the Chuck.
3. Sharpen the bit.
4. Split the point (if you choose).
Be sure to complete the first three procedures in
order to sharpen a bit; and always sharpen a bit prior
to splitting it.
On the Model 500X
Check your drill bit angle
Most bits are 118° or 135°.
Hold your bit point up to the
key to the left to see which
type your bit looks like. If you
can’t tell due to small size or
damage on the tip, set your
Drill Doctor based on the
application. Most wood and
soft metal applications
require 118°. Harder materi-
als such as stainless steel
and tool steel require 135°. If
you are drilling contoured materials (such a car fender),
plan on splitting the point.
Choosing Your Drill Bit Point Angle
When drilling into certain difficult materials, a shallower
point or 135° point angle produces a better-finished hole.
Your Drill Doctor allows you to sharpen bits with either
the standard 118° or the flatter 135° point angle. You can
also adjust the “chisel and relief angle.” (Refer to page 23
for the benefits of using Variable Alignment to adjust the
Chisel and Relief angles.)
Depending on the material you are drilling in, you may
choose to increase or decrease these angles.
1.

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On the Model 750X
Aligning the Drill Bit
This makes sure that the Drill Doctor creates the right
geometry. It also sets the bit so that only a small amount
of the tip is taken off.
(See page 21 to align and sharpen a Masonry drill bit.)
Choose the angle
The Model 750X has addi-
tional advanced features that
enable you to fine-tune your
bit geometry. Loosen the
Point Angle Adjustment
Knob to the right of the
Sharpening Port and slide the
metal Point Angle Adjust-
ment Plate to 118°, 135° or
the custom angle of your choice. Choose the point angle
based on the application (material) you’re drilling. Then
re-tighten the Knob.
Point Angle
Adjustment Knob
Choose the angle
Loosen the Point
Angle Adjustment
Knob on the right side
of the Sharpening Port
and slide the metal
Point Angle Adjust-
ment Plate to either
the standard 118° or
the flatter 135° point
angle. Then re-tighten
the Knob.
Point Angle
Adjustment Knob
2.

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1. Insert bit in Chuck and
tighten
Insert the bit into the Chuck
Jaws and close the Jaws just to
the point where the bit slides in
and out. Do not over tighten
the Chuck; the bit needs to be
able to move in and out until
Step 4. (Model 750X users
refer to “Using the Variable
Material Take-Off (MTO)” on
page 24.)
Agood test to see if the Chuck
is tightened the correct amount
is to make sure it moves when
you pull on it with your fingers,
but will not fall out when you
turn the Chuck upside down.
Insert Chuck into
Alignment Port
Press the Alignment
Button down and hold it.
Match either of the
Alignment Guides on the
Chuck with the 118°
Notch on the Alignment
Port. Insert the Chuck.
While holding the button
down, slide the drill bit
forward until it touches
the Drill Stop and the
Chuck is pushed all the
way into the Alignment
Port. Release the Align-
ment Button.
If you are using a Model
750X and have chosen
acustom bit point
(between 115° and 140°),
start the alignment in the closest setting to the point angle
desired. (For example, if you are setting the point angle
below 118°, then set the alignment in the 118° setting.)
Refer to “Using the Variable Alignment to Adjust the Chis-
el and Relief Angle” on page 23.
1”
Alignment Button
Drill Bit
Stop
118°
2.
Alignment
Guide

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Tighten Chuck
Hold onto the Chuck and
tighten the Chuck Knob.
(Avoid over-tightening the
Chuck in the Alignment Port;
this could damage the Chuck
and Port.)
Remove and re-tighten
Press the Alignment Button
and remove the chucked drill
bit. Tighten the Chuck once
more to ensure the bit won’t
move when you sharpen it.
You are now ready to sharpen
the drill bit.
5.
Sharpening the Drill Bit
Before sharpening you should know:
•Keep the Cam in contact with the Cam Guide as you
sharpen—push the Chuck straight into the Port.
•Only light pressure is required.
4.
Adjust Bit Position
Look at your bit and make
sure the Bit Clamp Arms are
in the bit’s narrowest spot. If
not, turn the bit in the chuck
so that it is held by the Bit
Clamp Arms at the narrowest
width. This is important
because this setting deter-
mines the angle at which your
bit will be sharpened.
3.
Drill Bit Stop
Bit Clamp Arms

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1.
Cam Guide
Align Guides
Turn the Drill Doctor on.
Align either of the Sharpen-
ing Guides with the Cam
Guide on the machine.
Cam
Insert Chuck and turn
until the bit is sharp
Insert the Chuck in the
Sharpening Port. Making
sure you keep the Cam
against the Cam Guide,
rotate the Chuck one half-
turn in a clockwise direc-
tion—from Sharpening Guide
to Sharpening Guide—an
EVEN number of times. Your
motion should be smooth and
even. To sharpen both sides of the bit evenly, always use
an even number of half-turns. The number of turns need-
ed to sharpen the bit depends on the size.
Turn the Chuck an even number of half-turns with light
inward pressure:
•3/32-inch bits—use 2to 4 half-turns,
•1/8-inch bits—use 4to 6 half-turns,
•3/8-inch bits—use 16 to 20 half-turns.
Note: Use just enough pressure to keep the Cam against
the Cam Guide. Let the machine do the sharpening.
Sharpening
Guide
2.
•You will hear a grinding noise (zzzzzzzzz)as you
complete each half-turn and each side of the bit face is
ground.
•The Chuck will rock as you turn it and the Cam rides
on the Guide.
Cam
Against
Cam Guide

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Identifying Correctly Sharpened
Drill Bits (and what to do with
those that aren’t!)
Correctly Sharpened Bits
The entire surface from the
Cutting Edge to the Heel will
have a finely ground surface
without ridges or indenta-
tions. The Heel will always
be lower than the Cutting
Edge. The Chisel Edge will be
clean and straight.
Problem Cause
Chuck Jaws did not grip drill
bit properly in the aligning
process.
Solution
Realign the bit by carefully
following steps 1 through 5
on pages 12 to 14.
Problem
The Chisel Edge is
not clean or
straight.
Cause
The bit isn’t completely ground yet.
Solution
Continue sharpening the bit until
the chisel is clean and straight. If
the machine quits removing mate-
rial before the chisel is clean, re-
align and sharpen again. (Model
750X users can increase or
decrease MTO (Material Take-Off)
to speed up this process.
Chisel Point
Cutting Edge
Heel
The Chisel Edge
is ground flat.
Incorrectly Sharpened Bits

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Cutting Edge
Heel
Relief Angle
Problem Cause
Drill bit alignment.
Solution
Re-align the drill using the
Adjustable Alignment proce-
dure on page 23. To increase
relief, insert the alignment
guide on the chuck closer to
the (+) side of the alignment
port, then sharpen the bit.
Insuffecient (Negative)
relief or a slow cutting
drill bit.
Cause
Chuck too loose or too much
pressure when sharpening.
Solution
Use more torque when tight-
ening the Chuck or less pres-
sure when sharpening. Clean
the Chuck w/ compressed air
if the problem persists.
Bit backing out or
slipping out of the
jaws when you are
sharpening
Problem
Split Points
Split point drill bits prevent “walk-around” on the materi-
al before they begin to cut.
This feature is described as self-centering. The need to
center punch is effectively eliminated. A standard drill bit
chisel point has to wear an area in the middle of the hole
to be drilled before the cutting edges will remove material.
Due to additional cutting lips along the chisel edge, a split
point will begin cutting immediately.Up to 70% less
thrust (when compared to a non-split or conventional
point) is required to drill a hole with a split point.

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Creating or Replacing a Split Point
Leave bit in Chuck after
sharpening
Always align and sharpen a
bit before splitting it. To split
the point, do not remove the
bit from the Chuck after
sharpening.
When splitting a 135° drill
bit, align in the 118° position,
and then sharpen in the 135°
point angle position.
1.
Align Guides
Align one of the Sharpening
Guides on the Chuck (short
white marks) with the Split-
ting Guide on the Splitting
Port. Make sure the Align-
ment Guides insert into the
Split Point Guide Rails in the
Splitting Port.
2.
Split the point
Press Chuck slowly and firm-
ly into the Splitting Port until
it stops. Remove the chuck,
rotate one-half turn,and
repeat.
Check the tip of the bit care-
fully to determine that both
sides of the bit are split
equally. Compare it to the
illustrations. If it does not
match, study the information
following.
3.
Splitting Guide
Sharpening
Guide