WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#EW6966 PRINTED IN TAIWAN
This manual provides critical safety instructions on the proper setup,
operation, maintenance, and service of this machine/tool. Save this
document, refer to it often, and use it to instruct other operators.
Failure to read, understand and follow the instructions in this manual
may result in fire or serious personal injury—including amputation,
electrocution, or death.
The owner of this machine/tool is solely responsible for its safe use.
This responsibility includes but is not limited to proper installation in
a safe environment, personnel training and usage authorization,
proper inspection and maintenance, manual availability and comprehension, application of safety devices, cutting/sanding/grinding tool
integrity, and the usage of personal protective equipment.
The manufacturer will not be held liable for injury or property damage
from negligence, improper training, machine modifications or misuse.
Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State
of California to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:
• Lead from lead-based paints.
• Crystalline silica from bricks, cement and other masonry products.
• Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
Work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter
out microscopic particles.
We stand behind our machines! If you have questions or need help, contact us with the information
below. Before contacting, make sure you get the
serial number
from the
machine ID label. This will help us help you faster.
We want your feedback on this manual. What did
you like about it? Where could it be improved?
Please take a few minutes to give us feedback.
Email: manuals@grizzly.com
Foreword
We are proud to offer the Model G0577 Fretboard
Radiusing Attachment. This attachment is part
of a growing Grizzly family of fine woodworking
accessories. When used according to the guidelines set forth in this manual, you can expect years
of trouble-free, enjoyable operation and proof of
Grizzly’s commitment to customer satisfaction.
We are pleased to provide this manual with the
Model G0577. It was written to guide you through
assembly, review safety considerations, and cover
general operating procedures. It represents our
effort to produce the best documentation possible.
The specifications, drawings, and photographs
illustrated in this manual represent the Model
G0577 as supplied when the manual was prepared. However, owing to Grizzly’s policy of continuous improvement, changes may be made at
any time with no obligation on the part of Grizzly.
For your convenience, we always keep current
Grizzly manuals available on our website at www.grizzly.com. Any updates to your attachment will
be reflected in these manuals as soon as they are
complete. Visit our site often to check for the latest updates to this manual!
Contact Info
and manufacture date
Grizzly Technical Support
1815 W. Battlefield
Springfield, MO 65807
Phone: (570) 546-9663
Email: techsupport@grizzly.com
Grizzly Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
-2-
Model G0577 (Mfd. Since 12/17)
SECTION 1: SAFETY
For Your Own Safety, Read Instruction
Manual Before Operating this Machine
The purpose of safety symbols is to attract your attention to possible hazardous conditions. This
manual uses a series of symbols and signal words which are intended to convey the level of
importance of the safety messages. The progression of symbols is described below. Remember
that safety messages by themselves do not eliminate danger and are not a substitute for proper
accident prevention measures.
Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.
NOTICE
This symbol is used to alert the user to useful information about
proper operation of the machine.
Safety Instructions for Machinery
1. READ THROUGH THE ENTIRE MANUAL
BEFORE STARTING MACHINERY.
Machinery presents serious injury hazards
to untrained users.
2. ALWAYS USE ANSI APPROVED
SAFETY GLASSES WHEN OPERATING
MACHINERY. Everyday eyeglasses only
have impact resistant lenses, they are
NOT safety glasses.
4. ALWAYS USE HEARING PROTECTION
WHEN OPERATING MACHINERY.
Machinery noise can cause permanent
hearing damage.
5. WEAR PROPER APPAREL. DO NOT
wear loose clothing, gloves, neckties, rings,
or jewelry which may get caught in moving
parts. Wear protective hair covering to contain long hair and wear non-slip footwear.
3. ALWAYS WEAR AN ANSI APPROVED
RESPIRATOR WHEN OPERATING
MACHINERY THAT PRODUCES DUST.
Wood dust is a carcinogen and can cause
cancer and severe respiratory illnesses.
Model G0577 (Mfd. Since 12/17)
6. NEVER OPERATE MACHINERY WHEN
TIRED, OR UNDER THE INFLUENCE OF
DRUGS OR ALCOHOL. Be mentally alert
at all times when running machinery.
-3-
Safety Instructions for Machinery
7. ONLY ALLOW TRAINED AND PROPERLY SUPERVISED PERSONNEL TO
OPERATE MACHINERY. Make sure
operation instructions are safe and clearly
understood.
8. KEEP CHILDREN AND VISITORS AWAY.
Keep all children and visitors a safe distance from the work area.
9. MAKE WORKSHOP CHILD PROOF. Use
padlocks, master switches, and remove
start switch keys.
10. NEVER LEAVE WHEN MACHINE IS
RUNNING. Turn power OFF and allow all
moving parts to come to a complete stop
before leaving machine unattended.
11. DO NOT USE IN DANGEROUS
ENVIRONMENTS. DO NOT use machin-
ery in damp, wet locations, or where any
flammable or noxious fumes may exist.
12. KEEP WORK AREA CLEAN AND WELL
LIT. Clutter and dark shadows may cause
accidents.
17. REMOVE ADJUSTING KEYS AND
WRENCHES. Make a habit of checking for
keys and adjusting wrenches before turning machinery ON.
18. CHECK FOR DAMAGED PARTS
BEFORE USING MACHINERY. Check
for binding and alignment of parts, broken
parts, part mounting, loose bolts, and any
other conditions that may affect machine
operation. Repair or replace damaged
parts.
19. USE RECOMMENDED ACCESSORIES.
Refer to the instruction manual for recommended accessories. The use of improper
accessories may cause risk of injury.
20. DO NOT FORCE MACHINERY. Work at
the speed for which the machine or accessory was designed.
21. SECURE WORKPIECE. Use clamps or
a vise to hold the workpiece when practical. A secured workpiece protects your
hands and frees both hands to operate the
machine.
13. USE A GROUNDED EXTENSION CORD
RATED FOR THE MACHINE AMPERAGE.
Undersized cords overheat and lose power.
Replace extension cords if they become
damaged. DO NOT use extension cords
for 220V machinery.
14.
ALWAYS DISCONNECT FROM POWER
SOURCE BEFORE SERVICING
MACHINERY. Make sure switch is in
position before reconnecting.
15. MAINTAIN MACHINERY WITH CARE.
Keep blades sharp and clean for best and
safest performance. Follow instructions for
lubricating and changing accessories.
16. MAKE SURE GUARDS ARE IN PLACE
AND WORK CORRECTLY BEFORE
USING MACHINERY.
-4-
OFF
22. DO NOT OVERREACH. Keep proper footing and balance at all times.
23. MANY MACHINES WILL EJECT THE
WORKPIECE TOWARD THE OPERATOR.
Know and avoid conditions that cause the
workpiece to "kickback."
24. ALWAYS LOCK MOBILE BASES
(IF USED) BEFORE OPERATING
MACHINERY.
25. BE AWARE THAT CERTAIN WOODS
MAY CAUSE AN ALLERGIC REACTION
in people and animals, especially when
exposed to fine dust. Make sure you
know what type of wood dust you will be
exposed to and always wear an approved
respirator.
Model G0577 (Mfd. Since 12/17)
SECTION 2: SET UP
Set Up Safety
This attachment presents serious injury hazards to untrained users.
Read through this entire
manual to become familiar with the controls and
operations before using
this attachment!
Wear safety glasses during the entire set up process!
Unpacking
The Model G0577 was carefully packed when it
left our warehouse. If you discover the attachment is damaged after you have signed for deliver y, please immediately call Customer Service at (570) 546-9663for advice.
Save the containers and all packing materials for
possible inspection by the carrier or its agent.
Otherwise, filing a freight claim can be difficult.
When you are completely satisfied with the condition of your shipment, you should inventory the
contents.
Items Needed For
Unsupervised children and
visitors inside your shop
could cause serious personal injury to themselves.
Lock all entrances to the
shop when you are away and
DO NOT allow unsupervised
children or visitors in your
shop at any time!
Set Up
The following items may be needed to complete
the set up process, but are not included with your
radiusing attachment:
DESCRIPTION QTY
• An Assistant ............................................... 1
• Hand Drill .................................................... 1
• Drill Bit 7⁄16" ................................................. 1
• Drill Bit ¹⁄8" or ³⁄16" ...................................... 1
Older Model G1140 Edge Sanders do not come
with the installation holes shown in Figure 2.
These models will have to be drilled and tapped
as described in the following instructions.
Figure 2. Installation hole locations.
To drill and tap the installation holes:
1. Unplug the sander!
If you are installing the radiusing attachment
2.
onto a Model G1140 Edge Sander, remove
the end table, main table, table adjustment
mechanisms, and the sanding stop.
E
B
I
F
G
K
C
Figure 1. Radiusing attachment inventory.
In the event that any nonproprietary parts are
missing (e.g. a nut or a washer), we would be
glad to replace them, or replacements can be
obtained at your local hardware store.
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D
H
L
Model G0577 (Mfd. Since 12/17)
3. Use a center punch to mark the installation
holes shown in Figures 3 & 4.
10mm (25⁄64")
4. Temporarily bolt the long support bracket into
the two holes indicated in Figure 5 and use a
center punch to mark the location of the third
hole.
27mm
(1
7
⁄16"
Diameter
Figure 3. Rotation plate mounting hole.
91mm
(337⁄64")
76mm
(3")
27mm (11⁄16")
7
⁄16"
Diameter
7
⁄16"
Diameter
Figure 4. Platen mounting holes.
1
⁄16")
248mm (93⁄4")
Pre-Drilled
Mounting
Holes
180mm (73⁄32")
5
⁄16"
34mm
11
(1
⁄32")
Diameter
Figure 5. Stand mounting hole.
5.
Drill pilot holes with an ¹⁄8" or a ³⁄16" drill bit.
Drill the holes through the platen and the
6.
rotation plate with a 7⁄16" drill bit.
Drill the installation hole in the stand using a
7.
5
⁄16
" drill bit.
Note—Always use cutting fluid when drilling
and tapping sheet metal (the stand and rotation plate). When drilling or tapping cast iron
(the platen), cutting fluid is not necessary.
Thread the stand installation hole with a 3⁄8
8.
tap.
"
Model G0577 (Mfd. Since 12/17)
Note—For every half turn of the tap, back off
a quarter turn to clear the chips and prevent
the tap from breaking.
-7-
Assembly
To install fretboard radiusing attachment:
Install the long support bracket with three 3⁄8"-
4.
16 x 1" hex bolts and washers.
Plumb the long support bracket and tighten
5.
the bolts.
1. Slide the slot in the short support bracket
onto the rotation plate and loosely attach the
3
bracket to the platen with two
⁄8"-16 x 2" hex
bolts, four flat washers, and two hex nuts.
Note—Some machines may require the
3
included
⁄8" thick shim between the bracket
and the platen.
2. Attach rotation plate bracket to short support
5
⁄16
bracket with (2)
5
⁄16
" flat washers (see Figure 6), then align
"-18 x 1⁄2
" hex bolts and (2)
hole in short support bracket with hole in
rotation plate and loosely secure it with a
3
⁄8"-16 x 1½" hex bolt and a 3⁄8" flat washer.
Short Support
Bracket
x 2
Rotation
Plate Bracket
Remove the upper right motor mounting bolt.
6.
7. Install the cross brace as shown in Figure
5
8 with three
⁄16"-18 x 2½" hex bolts, six flat
washers, and three hex nuts.
Cross Brace
Figure 8. Cross brace placement.
8. Slide the horizontal adjustment tubes through
the guide rails as shown in Figure 9, with the
threaded holes towards the outside of the
machine, and tighten the hex bolts.
x 1
Rotation
Plate
Figure 6. Rotation plate bracket attached to
short support bracket and rotation plate.
3. Plumb the short support bracket as shown in
Figure 7 and tighten the bolts.
Figure 7. Plumbing the short support bracket.
-8-
Guide Rail A
Horizontal
Adjustment
Tube
Guide Rail B
Figure 9. Guide rail installation.
Model G0577 (Mfd. Since 12/17)
9. Slide the height adjustment arms into the
locking plates, as shown in Figure 10, with
the hanger openings outward, and tighten the
hex bolts.
Adjust the height adjustment arms until the
11.
swing arm is seated into the hangers and
both ends are an equal distance above the
sanding belt.
Height
Adjustment
Arms
Figure 10. Height adjustment arm installation.
Place the swing arm into the hanger open-
10.
ings as shown in Figure 11.
12. To use the full surface of the sanding belt,
slide the horizontal adjustment arms so the
swing arm is diagonal across the sanding belt
surface.
Height
Adjustment
Arms
Figure 11. Swing arm placement.
Model G0577 (Mfd. Since 12/17)
-9-
SECTION 3: OPERATIONS
Operation Safety
Damage to your eyes, lungs, and ears could
result from using this attachment without
proper protective gear. Always wear safety
glasses, a respirator, and hearing protection
when operating this attachment.
Loose hair and clothing could get caught in
machinery and cause serious personal injury. Keep
loose clothing and long
hair away from moving
machinery.
Attaching the
Fretboard
There are several methods of attaching the
fretboard to the radiusing attachment. These
include screws, double stick tape, friction pins,
clamping, or a vacuum system. These instructions only cover attaching the fretboard with
double stick tape.
To attach the fretboard to the radiusing attachment:
1. Use a jointer to flatten the back of the
fretboard.
Mark a line down the center of the back of
2.
the fretboard.
Note—This center line is important. If it is off
center, the radius of the fretboard will be off
center.
3. Place a strip of double stick tape on either
side of the holes in the swing arm crossbar.
NOTICE
If you have never used this type of attachment or equipment before, WE STRONGLY
RECOMMEND that you read books, trade
magazines, or get formal training before
beginning any projects. Regardless of the
content in this section, Grizzly Industrial
will not be held liable for accidents caused
by lack of training.
-10 -
Note—Only use high quality, film type, dou-
ble stick tape. Reinforced and foam backed
double stick tape will not hold the fretboard
securely.
Line up the swing arm crossbar holes with
4.
the center line on the fretboard and carefully
stick the fretboard to the crossbar.
When finished radiusing the fretboard,
5.
remove the tape residue from the crossbar
with WD-40
Clean off the oil residue with lacquer thinner
6.
or an alcohol based solvent.
®
, or an oil, such as gun oil.
Model G0577 (Mfd. Since 12/17)
Adjusting Radius
Sanding
This fretboard radiusing attachment is capable of
creating radiuses from 10" to 16" by adjusting the
distance from the swing arm shaft to the sanded
surface.
To adjust the radius:
Loosen the button head cap screws that
1.
secure the swing arm shafts to the height
adjustment arms as shown in Figure 12.
Swing Arm
Cap Screw
X"
To radius a fretboard:
Adjust the height adjustment arm so the
1.
cross member is parallel with the sanding belt
as shown in Figure 13.
Note—Notice how the swing arm shafts in
Figure 13 are different distances from the
fretboard (to create a compound radius), but
the fretboard is parallel with the sanding belt.
Leveling
Knobs
Cross
Member
Fretboard
Figure 12. Swing arm shaft adjustment.
2.
Adjust the height from the bottom surface of
the fretboard to the center of the swing arm
shaft to the desired radius.
Example: To achieve a 16" radius on the
fretboard, the distance shown as X" in Figure 12 would be 16".
Repeat Step 2 on the other end of the
3.
fretboard.
Note—To create a compound radius, the
distance from the fretboard to the swing arm
shaft will be different on each end.
Figure 13. Adjusting the cross member parallel
with the sanding belt.
2. Use the leveling knobs to fine tune the height
so the swing arm can have free motion.
Turn the sander ON. Lower the fretboard with
3.
the leveling knobs and swing the swing arm.
Continue with this step until the fretboard is
sanded across its entire surface.
Check the fretboard for the desired radius
4.
with radius gauges.
—If the radius is incorrect, increase the dis-
tance between the swing arm shaft and the
fretboard to make a larger radius; shorten it
to make a smaller radius.
—If the radius is correct, continue sanding
the fretboard to the desired thickness.
Model G0577 (Mfd. Since 12/17)
-11-
SECTION 4: MAINTENANCE
Lubrication
This radiusing attachment, requires minimal maintenance. For optimum performance, lubricate the
swing arm shafts with a general purpose grease,
as needed.
Always disconnect power
to the machine before
performing maintenance.
Failure to do this may
result in serious personal injur y.
G0577 Parts List
Cleaning
Cleaning the Model G0577 is relatively easy.
Vacuum excess wood chips and sawdust, and
wipe off the remaining dust with a dry cloth.
REFPART #DES CRIPTI ONREF P ART #DES CRIPTI ON
201P0577201RADI US CONTRO L SWI NG ARM219P0577219LOCK PLATE A
202P0577202CROSS MEMBER220P0577220LOCK PLATE B
203P0577203BUTTON HD CAP SCR 3/8-16 X 1221P0577221GUIDE RAI L A
204P0577204CROSS MEMBER SHAFT222P0577222GUIDE RAI L B
205P0577205SWI NG ARM S HAFT LE FT223P0577223HEX BOLT 5/ 16-18 X 2-1/2
206P0577206SWI NG ARM S HAFT RI GHT224P0577224LOCK WASHER 5/16
207P0577207LOCK COLLAR225P0577225HEX BOLT 5/ 16-18 X 1-1/2
208PSS11SET SCREW 1/4-20 X 1/4226P0577226FLAT WASHER 5/16
209P0577209HANGER227P0577227HEX NUT 5/16-18
210PSS26SET SCREW 10-24 X 3/8228P0577228CAP SCREW 3/8-16 X 1
211P0577211HANGER SCREW 5/16229P0577229FLAT WASHER 3/8
212P0577212LEVELING FOOT230P0577230HEX BOLT 3/ 8-16 X 1
213P0577213HEI GHT ADJ USTMENT ARM231P0577231SHI M
214P0577214HORI Z ADJ TUBE232P0577232 HEX NUT 3/8-16
215P0577215END CA P233P0577233 HEX BOLT 3/8-16 X 1-1/2
216V2 P0577216V2 SHORT SUPPORT BRACKET V2. 12.17234P0577234 HEX BOLT 3/8-16 X 2
217P0577217LONG SUPPORT BRACKET235P0577235 HEX BOLT 5/16-18 X 1/2
218P0577218BRA CE236P0577236 ROTATION PLATE BRACKET
-12-
Model G0577 (Mfd. Since 12/17)
G0577 Parts Breakdown
203
203
225
224
206
215
204
208
220
213
207
211
210
202
228
212
223
224
221
215
222
214
223
216V2
222
221
219
224
225
226
234
227
229
223
229
226
232
218
209
226
205
231
235
229
226
236
233
227
203
201
203
223
226
Model G0577 (Mfd. Since 12/17)
224
223
226
217
229
230
-13-
WARRANTY AND RETURNS
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from
the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse,
negligence, accidents, repairs or alterations or lack of maintenance. This is Grizzly’s sole written warranty
and any and all warranties that may be implied by law, including any merchantability or fitness, for any particular purpose, are hereby limited to the duration of this written warranty. We do not warrant or represent
that the merchandise complies with the provisions of any law or acts unless the manufacturer so warrants.
In no event shall Grizzly’s liability under this warranty exceed the purchase price paid for the product and
any legal actions brought against Grizzly shall be tried in the State of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental, contingent, special,
or consequential damages arising from the use of our products.
To take advantage of this warranty, contact us by mail or phone and give us all the details. We will then
issue you a “Return Number,’’ which must be clearly posted on the outside as well as the inside of the
carton. We will not accept any item back without this number. Proof of purchase must accompany the
merchandise.
The manufacturers reserve the right to change specifications at any time because they constantly strive to
achieve better quality equipment. We make every effort to ensure that our products meet high quality and
durability standards and we hope you never need to use this warranty.
Please feel free to write or call us if you have any questions about the machine or the manual.
Thank you again for your business and continued support. We hope to serve you again soon.
-14-
Model G0577 (Mfd. Since 12/17)
WARRANTY CARD
Name _____________________________________________________________________________
Street _____________________________________________________________________________
City _______________________ State _________________________ Zip _____________________
Model # ____________________ Order # _______________________ Serial # __________________
The following information is given on a voluntary basis. It will be used for marketing purposes to help us develop
better products and services. Of course, all information is strictly confidential.
1. How did you learn about us?
____ Advertisement ____ Friend ____ Catalog
____ Card Deck ____ Website ____ Other:
Which of the following magazines do you subscribe to?
2.
____ Cabinet Maker
____ Family Handyman
____ Hand Loader
____ Handy
____ Home Shop Machinist
____ Journal of Light Cont.
____ Live Steam
____ Model Airplane News
____ Modeltec
____ Old House Journal
3. What is your annual household income?
____ $20,000-$29,000 ____ $30,000-$39,000 ____ $40,000-$49,000
____ $50,000-$59,000 ____ $60,000-$69,000 ____ $70,000+