WOLFF Rotary Blade Sharpener User manual

Ro t a R y Bl a d e
Sh a R p e n e R
Ma n u a l
Professionally Sharpen Rotary Blades
US Patent # 7,008,307 B2
Wa r n i n g
You must thoroughly read and understand this manual
before operating or servicing the equipment, paying
particular attention to Safety Instructions
Part # RS-MAN
Revision 051011

Page 2
In f o R M a t I o n o n Wo l f f In d u S t R I e S
Wolff Industries, Inc. was started by Lee and Mary Wolff. Lee invented
the Twice As Sharp® scissors sharpening system. With this sharpener you
are able to sharpen scissors 2-6 times sharper than new. This sharpener has
revolutionized the scissors sharpening business. Contact us if you would
like further information on the Twice As Sharp® scissors sharpening sys-
tem. Lee passed away in 1996 and his son David took over running the
business.
Wolff Industries, Inc. added a technical department in 1990 to develop new
products and to help our customers nd solutions to their unique cutting
problems. After listening to customer complaints about not being able to
sharpen rotary cutter blades, Jim O’Donnell and David started several years
ago to look into a new method of sharpening these blades that would be
easy to repeat, maintain the correct angle and give a superior cutting edge.
This process was helped along by Richard Hunter, a mechanical engineer
who took our concepts and designed several prototypes. We found that a
new, sharp edge could be created in less than 2 minutes on most blades.
Technical support is available Monday through Friday, 8:00 AM to 5:00 PM
eastern standard time. Call us with any of your sharpening questions! If it
is in regards to a specic blade, please have the blade in hand. If your ques-
tion is regarding a problem with the sharpener, please have the sharpener
nearby.
WOLFF®, TWICE AS SHARP®, OOKAMI®, and OOKAMI GOLD®
are registered trademarks of Wolff Industries, Inc. and may only be used to
describe items sharpened by using the equipment and methods described in
this manual. Any other uses are forbidden without written permission from
Wolff Industries, Inc.
GUARANTEE
If you are not satised during the rst thirty (30) days, return the
merchandise for a complete refund.

Page 3
ta B l e o f Co n t e n t S
Su B j e C t pa g e
Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Technicalsupport .......................................2
Trademarks............................................2
Guarantee.............................................2
Part names for rotary blade sharpener . . . . . . . . . . . . . . . . . . . . . . . .4
Parts included with rotary blade sharpener . . . . . . . . . . . . . . . . . . . .5
Setup motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Setuprotarysharpenerfixture..............................7
Loadingandunloadingsafety..............................8
Installing or removing a blade from the blade chuck.............9
Sharpeningsafety ......................................10
How to change the wheels................................11
Dressing an out of round wheel............................11
Machine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Bladeholdertobladesize................................13
Custombladeholders...................................13
Setting the angle on the slide assembly . . . . . . . . . . . . . . . . . . . . . .14
Sharpening a Rotary Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Sharpening blade on honing wheel . . . . . . . . . . . . . . . . . . .15
Polishing blade on polishing wheel . . . . . . . . . . . . . . . . . . .16
Clean blade and test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
RSLlargeblademodel ..................................19
Limited warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Disclaimer ............................................20

Page 4
pa R t na M e S f o R
Ro t a R y Bl a d e Sh a R p e n e R
INDUSTRIAL GRADE
BALLBEARING
MOTOR
SAFETY SHIELDS (2)
HONING WHEEL
MOUNTING HOLES
SLIDE ASSEMBLY
TRACK
STOP SCREW (2)
POLISHING WHEEL
ANGLE ADJUST KNOB
PIVOT BLOCK
HANDLE
BLADE CHUCK
BLADE HOLDERS
RSL-COM

Page 5
pa R t S In C l u d e d W I t h pa R t # RSQ-fIX
pa R t # de S C R I p t I o n Qu a n t I t y
. . . . . . Base plate, tracks, slide assembly and stop blocks . . . 1
RS-0212 . . . . . . . Gold Blade holder Maiman Minishear . . . 1
RS-0213 . . . . . . . Red Blade holder, 7.9 mm I.D. .........1
RS-0211 . . . . . . . Blue Blade holder, 9.9 mm I.D. . . . . . . . . 1
RS-0214 . . . . . . . Green Blade holder, 8.35 mm I.D. ......1
RS-MAN.......Operator’s Manual . . . . . . . . . . . . . . . . . . 1
RS-VIDD . . . . . . Instructional DVD. . . . . . . . . . . . . . . . . . . 1
pa R t S In C l u d e d W I t h pa R t # RSQ-CoM
RSQ-FIX .......All parts included with RS-FIX . . . . . . . . 1
RS-MOTOR . . . . 1/4 hsp, 3450 rpm motor. . . . . . . . . . . . . . 1
25200. . . . . . . . . . Professional Honing Wheel . . . . . . . . . . . 1
25100. . . . . . . . . . Polishing Wheel . . . . . . . . . . . . . . . . . . . . 1
23201. . . . . . . . . . Polishing Compound . . . . . . . . . . . . . . . . 1
. . . . . . . . . . . . . . . Screws for Safety Shield. . . . . . . . . . . . . . 4
. . . . . . . . . . . . . . . Washers for Safety Shield.............4
. . . . . . . . . . . . . . . Mounting Bolts for Safety Shield . . . . . . . 2
20200..........Dustmask.........................1
20300..........Safetyglasses ......................1
Note: RSQ-PRO contains Twice As Sharp® scissors sharpener,
RSQ-FIX, polishing wheel and polishing compound.
RSQ-FIX

Page 6
Se t upa n d Sa f e t y - Mo t o R
Inspect motor for shipping damage. Look
for broken or bent parts. Notify freight car-
rier if damaged.
Assemble plastic eye shields as pictured.
Attach to the machine with screws provided.
NEVER OPERATE MACHINE WITHOUT
EYE SHIELDS IN PLACE.
Be sure both wheels are tight.
Damaged wheels can y apart and
cause serious injury. Adjust the
two nger and two tongue guards to
a maximum of 1/16 inch clearance
between the wheel and the guards.
If you did not get the RS-COM or RS-
PRO then you will need to drill out the
mounting holes shown using a # 7 drill.
1/16 INCH MAX
(1.6 mm)
CLEARANCE

Page 7
Se t up- Ro t a R y Sh a R p e n e R fI X t u R e
Inspect xture for shipping dam-
age. Look for broken or bent parts.
Notify freight carrier if damaged.
Install motor to xture base using
the mounting holes shown. Install a
washer and wing-nut on each screw
post. Tighten wing-nut with ngers
until the motor does not move.
Mounting screws
shown in the correct
position for the blue
Twice As Sharp®
motor.
Move the mounting
screws to the holes
circled for the origi-
nal gray A-1 Twice
As Sharp® motor.
Sa f e t y No t e :
Plug machine into a 3 wire grounded receptacle only. Stand aside and let
the motor run for one minute before using it the rst time.
Holes for mounting
screws for gray motor.

Page 8
Sa f e t y - Ro t a R y Sh a R p e n e R fI X t u R e
Installing or removing a
blade in the load zone:
* * * Wa R n I n g * * *
Only install or remove the blade when the slide assembly is on the track in
the load/ unload zone. The blade is sharp and the wheels are moving if the
motor is turned on.
Sa f e t y Co N t i N u e d
Use safety glasses and face mask to catch dust
and grit. (Glasses provided are only for protec-
tion from ying grit and not intended for pro-
duction work with danger from ying parts.)

Page 9
Sa f e t y - Co n t I n u e d
Installing or removing a blade on the blade chuck:
Place the blade onto the
correct blade holder (see
page 13 for a chart). Hold
the knurled knob on the
blade holder. DO NOT
TURN THE BLADE
HOLDER TO TIGHT-
EN BLADE! Rotate the
knob clockwise while
holding the blade holder
to lock the blade onto the
blade chuck. Rotate the
knob counter clockwise
while holding the blade
holder to remove the
blade and blade holder.
Wa R n I n g !
The blade can be very
sharp.
Hold the blade holder still while
rotating the handle to install or
remove the blade.
Rotate the handle clockwise to
tighten the blade onto the blade
chuck. Rotate the handle coun-
ter clockwise to loosen the blade
from the blade chuck.

Page 10
IM p R o p e R uS e o f aB R a S I v e Wh e e l S Ma y Ca u S e
BR e a k a g e a n d Se R I o u S In j u R y .
Sharpening is a safe operation if the few basic rules listed below are followed.
These rules are based on material contained in the ANSI B7.1 Safety Code for
“Use, Care and Protection of Abrasive Wheels.” For your safety, we suggest you
benet from the experience of others and carefully follow these rules.
1. DO always HANDLE AND STORE
wheels in a CAREFUL manner.
2. DO VISUALLY INSPECT all wheels
before mounting for possible damage.
3. DO CHECK MACHINE SPEED
against the established maximum safe
operating speed marked on wheel.
4. DO CHECK MOUNTING FLANGES
for equal and correct diameter.
5. DO USE MOUNTING BLOTTERS
when supplied with wheels.
6. DO be sure TOOL HOLDER is
properly adjusted.
7. DO always USE A SAFETY GUARD
COVERING at least one-half of the
grinding wheel.
8. DO allow NEWLY MOUNTED
WHEELS to run at operating speed,
with guard in place, for at least one
minute before sharpening.
9. DO always WEAR SAFETY
GLASSES or some type of eye
protection when sharpening .
1. DON’T use a cracked wheel or one
that HAS BEEN DROPPED or has
become damaged.
2. DON’T FORCE a wheel onto the
machine OR ALTER the size of the
mounting hole - if wheel won’t t
the machine, get one that will.
3. DON’T ever EXCEED MAXIMUM
OPERATING SPEED established for
the wheel.
4. DON’T use mounting anges on
which the bearing surfaces ARE
NOT CLEAN, FLAT AND FREE OF
BURNS.
5. DON’T TIGHTEN the mounting nut
excessively.
6. DON’T grind the SIDE OF THE
WHEEL (see Safety Code B7.2 for
exception).
7. DON’T start the machine until the
WHEEL GUARD IS IN PLACE.
8. DON’T JAM work into the wheel.
9. DON’T STAND DIRECTLY IN
FRONT of a sharpening wheel
whenever a sharpener is started.
10. DON’T FORCE SHARPENING so
that motor slows noticeably or work
gets hot.
11. DO NOT power wash machine.
AVOID INHALATION OF DUST generated by sharpening and cutting operations. Ex-
posure to dust may cause respiratory ailments. Use approved NIOSH or MSHA respira-
tors, safety glasses or face shields, and protective clothing. Provide adequate ventilation
to eliminate dust, or to maintain dust level below the Threshold Limit Value for nuisance
dust as classied by OSHA.

Page 11
Remove the three screws holding the end cover with
a #2 Phillips screwdriver. Take cover off. Loosen the
nut holding the wheel with a 3/4” wrench. Hold the
wheel between your ngers when loosening or tight-
ening, never put side pressure against the wheel.
(The left wheel has a left
hand nut and loosens clock-
wise.) Remove wheel and
replace with factory wheel.
Tighten nut rmly and turn by
hand, if wheel has too much
side movement, loosen, rotate
and retighten until you get the
amount of side movement. Re-
place cover and screws. Never
run the sharpener without covers installed. A new
wheel must be allowed to run for at least one minute
before using. Do not stand in front of sharpener dur-
ing the rst minute. Never use cracked or chipped
wheels.
ho W t o Ch a n g e t h e Wh e e l S
dR e S S I n g a n ou t o f Ro u n d Wh e e l
This may be necessary during the life
of the wheel if rotary blade bounces
or chatters. Small grooves in the
wheel will have no effect or sharp-
ening. Use the same steps when re-
placing the honing wheel. If machine
vibrates, loosen and rotate wheel(s)
until it runs smoothly.
Left Hand Nut
Flange
Honing Wheel
Flange
Flange
Polishing Wheel
Flange
Right Hand Nut

Page 12
Ma C h I n e Ma I n t e n a n C e
NEVER OIL any part of your rotary blade sharpener. Motor bearings are
sealed ball bearings. Never lubricate rail and bearing assembly. Brush off
grit as necessary. If the wheels are worn see; (How to change the wheels on
page 11). If blade chuck movement becomes stiff or difcult, loosen angle
knob to clean the grit out.
As the wheels wear, adjust the
two nger and two tongue guards
to maintain the maximum 1/16
inch between the wheels and the
guards.
After changing or dressing wheels, make sure eye shields are in place and
securely fastened.
1/16 INCH MAX
(1.6 mm)
CLEARANCE
Blade Holders included in RSQ-FIX
RS-0212 RS-0211 RS-0214 RS-0213 RS-0216
28MM Blade Holder

Page 13
Blade Holder to Blade Size
Red Green Blue
Brand Blade Holder Blade Holder Blade Holder
KAI® .............. 45mm......................... 60mm
Dritz® .............. 45mm......................... 60mm
Clover®............. 45mm......................... 60mm
Fiskars® . . . . . . . . . . . . 45mm
Fiskars® . . . . . . . . . . . . 65mm
Olfa® .............................. 45mm......... 60mm
Other Blade Holders
RS-0216 .................................. 28mmBladeAdaptor
RS-0212 . . . . . . . Maiman Minishear . . . . . . . . . . . . . Gold Blade Holder
RS-DUSEN..... Dusenbury Blades . . . . . . . . . . . . Silver Blade Holders
. . . . . . . . . . . . . . . Two Blade Holders . . . . . . . . . .0.866 ID and 0.750 ID
* If your blade does not t one of these two holders see information below.
Custom Blade Holders
If your blade does not t one of the blade holders
supplied with your rotary blade sharpener send the
blade to Wolff Industries. We will give you a quote on
making custom blade holders to t your needs.

Page 14
Se t t I n g t h e an g l e o n t h e Sl I d e aS S e M B l y :
To set the angle on the slide assembly, loosen
black plastic knob.
Lock the knob when you reach the
desired setting. These settings are
reference points, not degrees.
To match the angle you can do a “scratch
test.” With the MOTOR OFF hold the
blade against the wheel. Move the wheels
with your thumb to create a scratch on the
blade. Adjust your angle until the scratch
is on the cutting edge. To save time in
the future make a note of this setting for
this blade size.
Note:
For 45 mm blade start at reference mark 3.
For 60 mm blade start at reference mark 4.

Page 15
Sh a R p e n I n g aRo t a R y Bl a d e
A. Screw both stop screws all the way
out.
B. Put the slide assembly on the left
hand track in the load/unload zone.
C. Install the blade and blade holder
onto the blade chuck (See “Safety
installing or removing a blade on
the blade chuck” on page 9).
D. Set the angle on the slide assembly
to match the blade you are going to
sharpen (See “setting angle” on
page 14).
E. Turn the motor on, move the slide
assembly towards the sharpening
wheel until the slide assembly makes
contact with the stop screw. Rotate
the handle with your right hand and
turn the stop screw with your left
hand until the blade makes contact
with the wheel completely for the full
360 degrees of the blade.
WARNING!
Make sure you keep rotating the blade while it is contact
with the wheel. If not you will create a at spot on the blade.

Page 16
F. Move your left hand to the
base
of the slide assembly and rotate the
blade against the sharpening wheel
for 30 full rotations. Make sure you
continue to rotate the blade until the
slide assembly is back in the load/
unload zone.
G. Check for a burr, if not burr, turn the stop screw back 1/16 of a turn
and sharpen the blade again 30 more rotations, repeat this step until a
burr is formed on the blade. Feel or look for the burr, whichever works
for you.
H. After the burr is formed (if this is a one-sided blade go to step L),
move the slide assembly to the load/unload zone and ip the blade over
(See “Safely installing or removing a blade on the blade chuck” on
page 9 if you need help installing the blade).
I. Move the stop screw 1/16 of a turn, rotate the handle and move the
blade against the sharpening wheel for 30 rotations. Move the slide
assembly back to the load/unload zone and check for a burr.
J. If no burr is formed move the stop screw 1/16 of a turn, rotate the
handle and move the blade against the sharpening wheel for 30 rota-
tions. Move the slide assembly back to the load/unload zone and check
for a burr. Repeat this step until a burr is
formed.
L. Carefully take the slide assembly off
the track and set it to the side. Apply pol-
ishing compound to the wheel.

Page 17
M. Put the slide assembly on the right
hand track and ip the blade over (if
this is a one-sided blade do not ip it
over) (See “Safely installing or re-
moving a blade on the blade chuck”
on page 9 for help).
N. Move the slide assembly towards the
polishing wheel until the slide assem-
bly makes contact with the stop screw.
Rotate the handle with your right hand,
and turn the stop screw with your left
hand until the blade makes contact
with the wheel completely for the full
360 degrees of the blade.
O. Move your left hand to the base of the
slide assembly and rotate the blade
against the polishing wheel for 30 full
rotations. Make sure you continue to
rotate the blade until the slide assem-
bly is back in the load/unload zone.
P. Check the blade to see if compound
has built up on the edge of the blade.
If you see compound on the edge of
the blade go to step R. If not, take the
slide assembly off the track and ap-
ply more polishing compound to the
wheel. Put the slide assembly back on
the right hand track.

Page 18
Q. Move the stop screw 1/16 of a turn. Rotate the blade while moving it
in, towards or away from the wheel, and do 30 full rotations. Move the
slide assembly to the load/unload zone. Check the blade to see if com-
pound has built up on the edge of the blade; if not, repeat steps P & Q.
R. If you are polishing a one-sided blade go to step W. Remove the slide
assembly from the right hand track, apply polishing compound to the
wheel.
S. Put the slide assembly back on the right hand track, ip the blade over
on the blade chuck, (see “Safely installing or removing a blade on the
blade chuck” on page 9 for help).
T. Rotate the blade against the polishing wheel for 30 full rotations.
Make sure you continue to rotate the blade until the slide assembly is
back in the load/unload zone.
U. Check the blade to see if compound has built up on the edge of the
blade. If you see compound on the edge of the blade go to step W.
If not, take the slide assembly off the track and apply more polishing
compound to the wheel. Put the slide assembly back on the right hand
track.
V. Move the stop screw 1/16 of a turn. Rotate the blade while moving it
in, towards or away from the wheel, and do 30 full rotations. Move the
slide assembly to the load/unload zone. Check the blade to see if com-
pound has built up on the edge of the blade; if not, repeat steps U & V.
W. Remove the blade, (see “Safely installing or removing a blade on the
blade chuck” on page 9 for help), and turn the motor off.
X. Carefully clean the polishing compound off the blade.
WARNING!
The blade is VERY SHARP.
Y. Install the blade on a rotary cutter handle and test on two layers of
cotton cloth.

Page 19
ho W t o ad j u S t t h e RI S e R Bl o C k S f o R va R I o u S Bl a d e S
For Blades from 1 in. to 4.5 in.
You will not need to add any extra riser
blocks
*Shown with Maiman mini blade
For Blades from 4.5 in. to 10 in.
You will need to add one extra riser blocks
For Blades from 10 in. to 17 in.
You will need to add two extra riser
blocks
*Extra riser blocks can always be
added to meet your sharpening
specications.
NOTE
Adjust the riser blocks so that the blade is contacting the wheels near the
centerline. Adjust up or down in conjunction with the angle setting.

Page 20
pa R t # de S C R I p t I o n
RS-DUSEN . . . . . (2) Bladeholders for Dusenbury blades
. . . . . . . . . . . . . . . (1) 0.866 I.D.
. . . . . . . . . . . . . . . (1) 0.750 I.D.
RS-0212 . . . . . . . Blade holder for Maiman Mini Shear Gold 0.382 I.D.
GLOVE-S . . . . . . Small Cut Resistant Glove (one glove)
GLOVE-M . . . . . Medium Cut Resistant Glove (one glove)
GLOVE-L . . . . . . Large Cut Resistant Glove (one glove)
GLOVE-XL . . . . Extra Large Cut Resistant Glove (one glove)
RS-0201 . . . . . . . Vertical Riser for Rotary Sharpener
RS-0211 . . . . . . . Blue quilt blade holder
RS-0213 .......Red quilt blade holder
RS-0214 . . . . . . . Green quilt blade holder
RS-0216 . . . . . . . 28mm quilt blade holder
ad d I t I o n a l pa R t S av a I l a B l e f o R t h e Ro t a R y Sh a R p e n e R