ANNIVERSARY BUNDLE
BUNDLE D’ANNIVERSAIRE
TEKNATOOL INTERNATIONAL Ltd.
www.teknatool.com
SKU: 48260
Teknatool International Ltd, PO Box 305378
Triton Plaza, North Shore 0757,
Auckland, New Zealand
PH: +649 477 5600 FAX: +649 477 5601
Email: [email protected]
Website: www.teknatool.com
Thank you for purchasing your Nova G3 Chuck Anniversary Bundle - The latest
addition to our Woodturning Chuck range. We are confident that it will be a great
aid towards fast workholding and enhance your woodturning capablity. The Nova
G3 chuck is designed for a range of woodholding modes while being quick and
easy to use.
FOR YOUR SAFETY
PLEASE READ & UNDERSTAND THIS INFORMATION BEFORE USING YOUR
NOVA G3 CHUCK.
DANGER: THIS CHUCK IS CAPABLE OF CONTRIBUTING TO SERIOUS
INJURY, AS WITH ANY OTHER POWER TOOL ACCESSORY, IF USED
IMPROPERLY ON THE LATHE.
Before using the Nova G3 chuck and accessories, read and understand this
instruction manual and the lathe owner’s manual. If you do not have a manual,
contact the supplier of your lathe to obtain one before using the lathe and Chuck.
User must be professionally trained to use this chuck. Vocational school courses
recommended. As with other chucking methods, an extremely cautious and
sensible approach is necessary. With the Nova G3 Chuck it is not possible to give
exact directions as to the amount of tightening pressure required for workholding.
Follow closely strict guidelines in this manual for different jaw types on wood
blank diameters and length, plus turning speed.
BEFORE USING THE NOVA G3 CHUCK MAKE SURE THAT -
• EYE PROTECTION WHICH COMPLIES WITH CURRENT ANSI STANDARD
Z87.1 (USA) IS WORN. WE RECOMMEND THAT A FULL FACE SHIELD BE
USED AT ALL TIMES.
• Chuck is properly secured on lathe spindle. Follow mounting instructions for
your lathe for faceplates and other spindle fixtures.
• For safety, DO NOT ROTATE CHUCK UNDER POWER WITHOUT WOOD
BEING GRIPPED.
• WARNING: EXCESSIVE SPEED IS A SERIOUS LATHE HAZARD. ALWAYS
TURN AT THE SLOWEST SPEED POSSIBLE.
• Speed will vary with wood blank size. The larger the blank the slower the speed.
SAFETY
SAFETY
Consult your lathe manual or lathe information plate for speed guidelines.
• DO NOT ATTEMPT TO USE THE CHUCK UNLESS THE LATHE SPEEDS
ARE KNOWN, YOU MUST STRICTLY FOLLOW THE MAXIMUM SPEED
LIMITS SET OUT IN THE OPERATING SECTION OF THIS MANUAL.
DO NOT EXCEED THEM UNDER ANY CIRCUMSTANCES.
• EXAMINE WOOD CAREFULLY. ONLY MOUNT WOOD THAT IS SOUND, If
any cracks, splits, or weakness is found in wood - DO NOT MOUNT ON
CHUCK. DO NOT MOUNT ANY WOOD THAT IS LIKELY TO BREAK UP
DURING TURNING (E.G. ROTTEN OR SPONGY WOOD). DO NOT USE
POORLY JOINTED or LAMINATED WOOD.
• Make sure wood is clamped firmly. Follow mounting instructions for different
gripping modes and jaw types. In the expansion mode do not use undue force
or jaws may split the wood.
• Do not exceed maximum guidelines in this manual for wood blank diameters
or lengths set out in this manual for different modes and jaw types.
DO NOT USE WITH ANY COPYTURNER OPERATIONS.
• Check wood is securely held in chuck, before operation. Check grip by
vigorously wrenching wood blank back and forth. If any loosening occurs,
re-examine holding area for adequate grip (Following mounting guidelines) and
any damage to holding area. Rotate manually to make sure of clearance before
switching power on.
• WARNING: FOR SAFE OPERATION
IT IS RECOMMENDED THAT TURNING BE CARRIED OUT
WITH JAW SLIDES NOT EXTENDING BEYOND THE CHUCK
BODY. HOWEVER THE JAW SLIDES CAN EXTEND ABOUT
6.35MM (1/4”) BEYOND THE BODY OF THE CHUCK TO GIVE A
WIDER RANGE OF EXPANSION, IF REQUIRED. EXTRA
CAUTION MUST BE EXERCISED WHEN TURNING WITH JAW
SLIDES EXTENDING BEYOND THE BODY OF THE CHUCK.
• Irregular or out of balance stock needs to be turned at the slowest possible
speed until it is in balance. For use on outboard/left-hand rotation - MAKE
SURE INSERT IS SECURELY LOCKED WITH GRUBSCREW BEFORE USE.
Use only hand held woodturning chisels to shape wood being held in chuck.
• USE THE RIGHT CHISEL FOR THE JOB AND DO NOT FORCE TOOLS. Use
safe and commonly approved chisel techniques. Wherever possible stand to
one side of the revolving wood.
SAFETY, ASSEMBLY & OPERATION
• WEAR PROPER CLOTHING. Do not wear any loose clothing, neck ties, gloves,
bracelets, rings or other jewellery that could get caught in moving parts. Wear
protective hair covering to contain long hair.
• Do NOT operate chuck or lathe while under the influence of DRUGS,
ALCOHOL or any MEDICATION.
• KEEP CHILDREN AND VISITORS AWAY. All children and visitors should be
kept safe distance from the work area.
Make workshop childproof with padlocks, master switches, or by
removing starter keys.
OPERATION- FITTING CHUCK TO LATHE
Check that the chuck thread specification matches the lathe spindle thread you
have. This is important for accuracy. The chuck body must contact an accurate
register on lathe, either a shoulder on spindle or bearing face etc to ensure chuck
will run true. If further modifications are needed (e.g. spacer) these are the
responsibility of the user. A good check is to see whether it screws home the same
as a faceplate or similar spindle fitting.
DO NOT USE UNLESS CHUCK IS PROPERLY FITTED TO SPINDLE.
NB: SOME FORM OF LOCKING MUST BE USED IF THE LATHE IS CAPABLE
OF REVERSE MODE.
Chuck operation
Adjustment: The Nova G3 chuck features a chuck
key, which locates easily and quickly into the
gearing mechanism. The high powered gearing
delivers outstanding grip at little effort. Moving in a
clockwise direction will expand the jaws outwards
(expansion), and moving the key in an anti-
clockwise direction will contract the jaws inwards
(contraction). For example, move the handle in an
anti-clockwise direction to move the jaws to clamp a
workpiece inside the jaws, and then move the
handle in a clockwise direction to release the work.
ASSEMBLY & OPERATION
AUTO STOP FEATURE
The Nova G3 has a built-in safety feature which prevents the jaws slides from
becoming dislodged from the chuck. The auto stop feature is first in the industry
doing away with shearing screws.
MOUNTING & DISMOUNTING OF JAWS
The Nova G3 chuck comes with no jaws attached. With the many jaws available
it is very easy to use your single chuck for a very wide range of applications. All
jaws in the Teknatool range for the Nova G3 are secured and attached the same
way.
Attaching Jaws- To mount the jaws to the Nova G3 chuck is another easy
process. Firstly wipe clean all jaw slides, especially the contact surfaces. Repeat
this with all four jaws you wish to attach. Jaw slides are numbered one to four
and have a corresponding jaw - of the same number. This may be represented
by dots if numbers are not present, i.e. 3 dots = #3. Place a jaw on its correct
jaw slide and position into the groove (location ring out from the jaw into the
groove of the jaw slide). The first few times, you may need to GENTLY tap the
jaws into the locater slot with a block of wood or plastic mallet. Place M6X10
counter sunk screws in jaws and screw them to finger tightness. When both
screws are in position and tight, then back off half a turn. Repeat this to the
remaining three jaws. Now using the Chuck key, scroll all jaws towards middle
until they all come together. Now with all jaws touching and equal pressure on
each, tighten all screws up. This will eliminate any run out. Ensure that there are
no gaps between the jaws. If a gap does appear, it will probably be due to a jaw
being placed on its wrong number (e.g. a #2 jaw on a #3 jaw slide).
To Remove Jaws- Simply using the 4mm Allen key supplied, unscrew all M6
counter sunk screws (there are eight of them). The jaws will come away once
their screws are released. Sometimes due to dust particle build up (after heavy
turning) the jaws may need a very light tap with a plastic hammer to dislodge
them.
IMPORTANT NOTE:
Accessory Jaws: Although the Nova G3 is compatible with all the Teknatool Accessory Jaws, it is not
recommended that the larger accessory jaws be used, as they will hold work to larger capacities than is
recommended with the Nova G3. For instance, we do not recommend that the following accessory jaws are
used with the Nova G3: 130mm Jaw (JS130N),PowerGrips (PJSN), Titan PowerGrips (13029) Moreover, it
is not recommended that work exceed a diameter of 14” and a depth of 5” with this chuck.
ASSEMBLY & OPERATION
DOVETAIL OPERATION
Expansion of the jaws into a recess- This function is for bowl and platter turning
where the projection (depth) of the wood blank is not too great i.e. up to 100mm
(4”). Characteristically these items have a parallel wood grain. IT MUST NOT BE
USED FOR ANY LONG WORK (OVER 100mm or 4”) AS THERE WOULD BE
GREAT DANGER OF WOOD TEARING OUT AND DISLODGING FROM
CHUCK.
Instructions below apply to the standard 50mm (2”) jaws but the general technique
is the same with other accessory jaws. However, the maximum size of wood blank
that can be mounted, the maximum turning speed and recess size varies with the
different accessory jaws. Consult specific instructions included for each jaw set.
This strong holding method, using the standard 50mm (2”) jaws, you can turn
bowls up to 350mm (14”) in diameter. DO NOT EXCEED 600 RPM WITH THIS
OPERATION. OUT OF BALANCE STOCK MUST BE TURNED AT THE
SLOWEST SPEED POSSIBLE.
50mm jaws
- Any recess can be turned between 50mm (2”) and 70mm (2-3/4”)
diameter. For smaller lids and thin platters (not exceeding 150mm or 6” diameter)
only a shallow recess of around 3mm (1/8”) is necessary. It will be matter of
gaining experience as to what combinations and sizes will best suit.
USING THE WOODWORM SCREW
The woodworm screw supplied with the Nova G3 chuck is purpose designed for
screw chucking. It is a cylindrical screw which maintains its full holding power
along the whole length, unlike normal tapered screws. The thin thread form is spe-
cially designed to cause minimum damage to wood fibers. They grip better than
screws because there is a larger volume of undamaged wood retained within the
screw.
The woodworm screw is made complete with the boss section in one piece. The
woodworm screw is to be used with the jaws remaining on the chuck. This facility
is very convenient for remounting work directly onto the jaws after the screw is
removed.
To convert to this operation, place the boss section into the centre of the chuck
and close jaws into the slots.
ASSEMBLY & OPERATION
USING THE WOODWORM SCREW continued...
BEFORE FINAL TIGHTENING MAKE SURE THAT THE FRONT OF THE BOSS
SECTION OF THE SCREW IS SEATED BEHIND AND AGAINST THE 50mm (2”)
JAWS. This will prevent any tendency for the boss section to creep forward when
the screw is being used.
NB: Recommended pre-drill size is 7mm (9/32”) for soft woods and 8mm
(5/16”) for hard woods.
The front face of the jaws have been machined to provide an accurate backing
surface. This is quite an advantage, providing a much tighter fit and wider
tolerance for irregularly faced stock. This feature is also quite an advantage when
using the screw to mount a bowl for first stage bowl turning - forming the outside
of the bowl to be put straight onto the jaws (the screw is first removed) after the
recess has been formed.
The woodworm screws provides 15mm -1/2mm OR 39/64” (0.609”) of thread
beyond the jaws. Irregular, rough tree blanks (e.g. small sections of tree limbs) not
exceeding the above sizes can be held quite firmly BUT caution must be exer-
cised. Check for adequate contact.
DO NOT USE THE SCREW FOR VERY LARGE WOOD BLANKS.
It’s intended for small bowl and screw chucking work. The maximum capacity
which should be mounted on the screw is 250mm (10”) diameter X 100mm (4”).
DO NOT EXCEED 600 RPM FOR THIS OPERATION, and use tailstock with a live
centre for support.
FORMING RECESS
The jaw dovetail has been designed for use with a standard skew scraper. This
chisel will make a recess to the angle required. FOR
SAFETY REASONS WE STRONGLY ADVISE
AGAINST USING ANY OTHER TOOL. A profile of
this chisel is shown. It is best to work with a tool,
which is already ground, to the correct angle. All that
is necessary then is to keep the leading edge of the
chisel flat on the wood, moving forward and out to
form the recess to the required diameter and depth. Mount bowl blank on screw
as described in previous section. It may be convenient to first mark out with a pen-
cil, a circle on the bowl blank. To mark out the recess diameter with pencil, hold
pencil point to desired radius, supported on the toolrest. Then revolve blank by
hand thus creating a pencilled circle. However, as specified above, any recess
diameter can be made between 50mm (2”) - 75mm (3”) so exact sizing of the
recess is unnecessary.
ASSEMBLY & OPERATION
FORMING RECESS continued...
Before scraping out the recess, slightly hollow out the centre of the bowl blank with
a bowl gouge or round nose scraper. The purpose is to relieve the centre so that
when the recess is scraped out only half the chisel
edge needs to be used. We recommend this to reduce
tearing of the wood by scraping action; and to make
the recess a little more finished to give a better effect
to the overall bowl. Extra embellishments can also be
made to the recess to enhance the bowl. After the
recess is finished and the outside of the bowl is turned
to shape, wind bowl back off screw. Bowl blank is now ready to be reversed into
the jaws. Expand the jaws into the recess. When the jaws are expanded out into
the recess, screw the wood blank gently back and forth to make sure it is seated
properly on the bottom face of the jaws.
WARNING: MAKE SURE THE JAWS ARE SEATED PROPERLY IN THE
RECESS AND THAT THE BOWL IS NOT INCORRECTLY RIDING ON THE FLAT
SHOULDER SECTION OF THE JAWS BEHIND THE DOVETAIL. THIS COULD
LEAD TO THE BOWL DISLODGING FROM CHUCK. LOOSEN JAWS AND
REMOUNT CORRECTLY.
Now give a few gentle raps with the end of a chisel handle or wooden mallet
around centre of bowl. Refer to Chuck Operation. Refer again to safety before
operation.
SPIGOT OPERATION
This is where the jaws contact around a wooden spigot for grip. This function is
mainly for box, goblet and vase turning, that is, end grain items with a fair degree
of overhang. This situation is one of the most difficult to provide secure holding no
matter what fixing method is used.
EXTREME CAUTION WITH THIS OPERATION MUST BE EXERCISED. DO NOT
EXCEED 850 RPM FOR THIS OPERATION. If used properly, the Nova G3 Chuck
provides a very powerful and secure grip in this mode.
ASSEMBLY & OPERATION
SPIGOT OPERATION continued...
Instructions below apply to the standard 50mm (2”) jaws but the general spigot
technique is the same for other jaw types. However, maximum turning speed and
recess size varies with different jaw types. Consult accessory jaw instructions.
With the standard set of 50mm (2”) jaws a maximum size woodblank of 100mm
(4”) diameter (NOT spigot size) by 150mm (6”) length can be turned. Square
timber of same length and between 40mm (1.5”) to 50mm (2”) and grip of all four
jaws into wood. MAKE SURE YOU HAVE AN ADEQUATE GRIP BEFORE
OPERATION by vigorously wrenching the limb mounted on chuck. If any
loosening occurs DO NOT PROCEED with operation. Repeat tightening
procedure and re-test grip.
SPIGOT SIZE:
Standard Jaws will grip a round spigot between 45mm (1-49/64”) to 65mm
(2-5/16”) approx. Square timber between 40mm (1-37/64”) to 50mm (2”) square
approx.
Jaw slides only
- With the 50mm (2”) add-on jaws removed, the jaw slides will grip
either round or square timber down to 8mm (5/16”). Length limits are the same for
spigot work. Small work not greater than this diameter can be turned at a speed
NOT EXCEEDING 1800 RPM. Larger work held in the jaw slides should NOT
EXCEED 850 RPM.
FORMING SPIGOT:
When selecting wood make sure it is sound without splits or weakness - especially
around the area where the spigot is to be formed. REMEMBER WITH FREE END
TURNING, THIS IS THE ONLY AREA FOR GRIP. IF ANY WEAKNESS IS
FOUND, DO NOT PROCEED. Mount wood between centres and turn the spigot
area. Make the spigot as parallel as possible to maximize the efficiency of the
clamping action. Only approximate sizing of the spigot is necessary, as the jaws
will accommodate a wide range of spigot diameters within the spigot limits stated
above. The 50mm (2”) standard jaw has a thin lip (or shoulder at the front face)
which is designed to bite into the timber as the jaws are tightened. DO NOT CUT
A RECESS FOR THE LIP TO FIT INTO, AS THIS WILL REDUCE GRIPPING
POWER.
ACCESSORY JAWS & OPERATION
ACCESSORY JAWS TURNING SPEED GUIDE
The following guide sets out the recommended maximum speeds for each of the
accessory jaws. Remember, excessive speed is a serious lathe hazard – give
careful consideration to the speed you use:
1. The bigger the work diameter – the slower the speed used.
2. Out of balance/work being roughed out must always be turned at the slowest
speed possible.
3. Speeds may differ from those in your lathe manual. If there is a difference, use
the SLOWER of the two recommended speeds.
20 MM JAW SET (Nova Sku: JS20N)
MOUNTING THE JAWS– See “Mounting the Accessory Jaws” in this manual.
PARTS PROVIDED– Four jaw segments. NOTE: There is only one screw posi-
tion for each of the 20mm jaw segments. Only one screw is necessary for secure
fastening of jaw segments because the jaw is designed for small turning work.
OPERATIONAL MODES
a. Expanding Dovetail Jaws
Using the 20mm jaws, bowls up to 150mm (6”) in diameter by 50mm (2”) depth
can be turned.
THIS METHOD MUST NOT BE USED FOR ANY WORK LONGER
THAN 50mm AS THERE WOULD BE GREAT DANGER OF WOOD
TEARING OUT OF THE CHUCK. DO NOT EXCEED 684 RPM
IN THIS MODE. OUT OF BALANCE STOCK MUST BE TURNED
AT THE SLOWEST SPEED POSSIBLE.
JAW TYPE EXPANDING CONTRACTING
20mm Jaw Set- 684 RPM 1440 RPM
50mm Jaw Set- 684 RPM 1020 RPM
100mm Jaw Set- 684 RPM 684 RPM
Mini Cole Jaw Set- 600 RPM 600 RPM
ACCESSORY JAWS & OPERATION
20 MM JAW SET (Nova Sku: JS20N) continued...
Recess: Maximum recess depth of 6.5mm can be
used. Any recess diameter can be turned between
23.5mm (15/16”) and 46mm (1-13/16”). The optimum
recess diameter is 25mm (1”). At this diameter, full
contact of jaws with recess is achieved. As the recess
diameter is increased above 20mm, less jaw contact
is made. This needs to be kept in mind when
considering the recess depth and the size of the
wood blank being mounted. Increase the recess
depth to maximum if a recess diameter in excess of 20mm is used.
b. Square Blanks (Contracting Action)
These jaws can grip a square spigot between approximately 12mm (31/64”) to a
maximum of 25mm (1”).
DO NOT EXCEED 1440 RPM IN THIS MODE MAXIMUM LENGTH
Wood blanks up to 125mm (5”) length by 25mm (1”).
c. Spigot Mounting (Contracting Action)
Use wood blank size up to 125mm (5”) length by 25mm (1”) diameter.
DO NOT EXCEED 1440 RPM FOR THIS OPERATION
Spigot Size: Minimum spigot size is 8.5mm (23/64”) up to a maximum
spigot size of 25mm (1”). Spigot Depth: Always use the maximum spigot
depth which is 19mm (3/4”).
d. Special Function
For lathes with hollow spindles, Teknatool Chucks with the 20mm jaws mounted,
could accept long lengths of round dowel below the 20mm size, which could be
fed through the lathe spindle and through the chuck. This means that multiple
turnings could be achieved by simply advancing the dowel through the centre of
the chuck and securing with the jaws, turning, parting off, and then advancing the
next piece through. Do not allow dowel to protrude past spindle on the outboard
end.
OPTIONAL ACCESSORIES
Not applicable for this jaw set.
The 20mm jaw set is not designed for mounting to the Cole/Mini
Cole Jaws Sets. DO NOT USE WITH COLE OR MINI COLE JAW SETS.
ACCESSORY JAWS & OPERATION
50 MM JAW SET (Nova Sku: JS50N)
MOUNTING THE JAWS– See “Mounting the Accessory
Jaws” in this manual.
PARTS PROVIDED– Four jaw segments
OPERATIONAL MODES
a. Expanding Dovetail Jaws
Using this method bowls of up to 310mm (12”) in diameter by 100mm (4”) in
depth can be turned.
THIS METHOD MUST NOT BE USED FOR ANY WORK LONGER
THAN 100MM AS THERE WOULD BE GREAT DANGER OF WOOD
TEARING OUT OF THE CHUCK. DO NOT EXCEED 684 RPM IN
THIS MODE. OUT OF BALANCE STOCK MUST BE TURNED AT
THE LOWEST SPEED POSSIBLE.
Recess: Maximum recess depth 6mm (1/4”). Any recess can be turned between
50mm (2”) and 75mm (3”) diameter. The optimum recess diameter is 50mm (2”).
Where ever possible keep your recess between 50mm – 60mm. Extra care must
be taken while turning with recesses above 60mm. YOU MUST USE THE
MAXIMUM RECESS DEPTH ON ALL RECESSES OVER 64mm (2.5”) diameter
OR ANY WORK WITH A DIAMETER OVER 150MM (6”). For smaller lids and
thin platters, not exceeding 150mm diameter, only a shallow recess of around
3mm (1/8”) is necessary.
b. Square Blanks (Contracting Action)
These jaws can grip a square spigot between approximately 40mm (1-9/16”) to
a maximum of 50mm (2”).
DO NOT EXCEED 1020RPM IN THIS MODE. Maximum length:Wood
blanks up to 150mm (6”) length by 100mm (4”).
c. Spigot Mounting (Contracting Action)
Use wood blank size up to 150mm (6”) length by 100mm (4”) diameter.
DO NOT EXCEED 1020RPM IN THIS OPERATION
Spigot Size: Minimum spigot size of 45mm (1-49/64”) up to a maximum
spigot size of 65mm (2-9/16”). Spigot Depth: The length of the spigot
area must not be less than 16mm (5/8”).
ACCESSORY JAWS & OPERATION
100 MM JAW SET (Nova Sku: JS100N)
MOUNTING THE JAWS– See “Mounting the Accessory Jaws”
in this manual.
PARTS PROVIDED– Four jaw segments.
OPERATIONAL MODES
a. Expanding Dovetail Jaws
Using this method with the 100mm jaws, bowls up to 360mm
(14”) diameter by 127mm (5”) depth can be turned. Any recess
can be turned between 97mm (3-13/16”) to 117mm (4-39/64”).
The optimum recess diameter is 97mm (3-13/16”). At this
diameter full contact of jaws with recess is achieved. As the recess diameter is
increased above 97mm, less jaw contact is made. This needs to be kept in mind
when considering the recess depth and the size of the wood blank being mount-
ed. Increase the recess depth to maximum if recess diameter in excess of
100mm is used. Recess: A full recess depth of 9mm (11/32”) is available.
THIS METHOD MUST NOT BE USED FOR ANY WORK LONGER THAN
127MM AS THERE WOULD BE GREAT DANGER OF WOOD TEARING OUT
OF CHUCK. DO NOT EXCEED 684 RPM IN THIS MODE.
b. Reverse Dovetail (Contracting Action)
There is a reverse dovetail to grip bowls with a foot mounting. Bowls/platters up
to 310mm (12”) can be turned. The optimum foot diameter is 85mm (3-11/32”).
Larger foot diameters can be used up to 92mm (3-5/8”), but above 90mm
(3-35/64”) the edges of the jaws can mark the wood. It is suggested that
masking tape be used to protect the foot from jaw marks. The maximum avail-
able foot depth is 12.5mm (1/2”).
DO NOT EXCEED 684 RPM IN THIS MODE.
c. Square Blanks (Contracting Action)
These jaws are not recommended for square blanks.
d. Spigot Mounting (with Reverse Dovetail)
A spigot using a reverse dovetail – same foot mounting procedure as in b. Wood
should be pre-machined to a cylinder (to optimise balance) with a diameter no
greater than 127mm (5”). DO NOT USE ANY EXTENSION OVER 120mm
(4-47/64”).
ACCESSORY JAWS & OPERATION
d. Spigot Mounting (with Reverse Dovetail) continued...
DO NOT EXCEED 684 RPM IN THIS MODE.
Spigot Depth: Always use maximum spigot depth of 12.5mm (1/2”).
e. False Wooden Jaws
Custom wooden jaw segment mounted on 100 or 130mm jaws. No responsibility
can be accepted for the user’s own adaptations of this custom facility. It is the
user’s responsibility to ensure that work is safely mounted.
Provision is made for the 100mm jaws to take custom false wooden jaws. There
are two screw positions in each jaw slide. These are made to accept a M6 by 30
Allen Head Cap Screw.
METHOD:
Careful consideration is needed as to the type of holding situation that is required
for the false wooden jaws. This will influence jaw diameter and design. The
following information is simply intended as a guideline. Turn a cylinder between
centres to the approximate diameter required for the false wooden jaws. A cylinder
of about 88mm (3-15/32”) will provide for good expansion of false wooden jaws.
However any diameter between 87mm (3-27/64”) and 100mm (4”) can be used.
SCREW DEPTH:
Use M6x30 screws. When the screws are fully screwed into the jaws there is a
height of 24mm of screw under the head. Note: Screws can only be screwed in to
a depth FLUSH with the underside of the jaw. IF SCREWS CONTACT FACE OF
THE CHUCK THEY WILL PREVENT JAW MOVEMENT. Provision needs to be
made for the screw head. Countersunk diameter is 10mm (25/64”). Coun-
tersunk depth depends on the length of the wooden blank. However the holes
need to be countersunk to a depth such that the screw is fully home, flush with the
underside of the jaw. It is helpful to bore the holes slightly oversize so there is
some adjustment.
SCREW POSITION:
Suggested method – Open jaws up to accept the wooden blank. Remove blank.
Use wooden blank to trace a circle on a piece of thin cardboard. Place cardboard
on the mounted jaws and trace out the screw position. Use a pin punch or
compass point to mark out the centre of the holes. Now place cardboard form over
the end of the wooden blank and mark hole position. There are two hole
positions on each jaw segment. Use two screws per segment to secure each false
wooden jaw.
OPTIONAL ACCESSORIES:
Fastening Kit for False Wooden Jaws Code: F100N
ACCESSORY JAWS & OPERATION
MINI COLE JAWS (Nova Sku: 6006)
PARTS PROVIDED
4 Diecast Cole Jaw Segments
8 M6x20 Countersunk Screws
8 M6x16 Cap Screws
8 Rubbers
IMPORTANT INFORMATION!!!!
METHOD OF FITTING FOR FIRST TIME OF USE
Extreme care should be taken. The locator ring on the back of the Cole Jaws
provides the accuracy of location. Care must be taken that this locator ring is not
damaged when the jaws are placed in the jaw slides. With the chuck body flat
on a bench, carefully place each Cole Jaw segment in line with the holes. Now
put screws in only a little way so that they are loose but engaged with the thread-
ed holes of the jaw slides. Remember to first lightly oil or grease screws under
heads before use to prevent screws locking onto jaw. Then gently rock the Cole
Jaw segment from side to side until the locator ring on the jaw segment is eased
properly in the groove of the jaw slide. See illustration next page. Look under jaw
segment to make sure the ring is properly seated in jaw slide groove. Check for
the gap between jaw slide and Cole Jaw segment – there should be no light
showing.
IT SHOULD NOT BE RIDING UP ON THE EDGE OF THE GROOVE!
Now the screw can be fully wound in. Use this method both screws should first
be wound down until heads just touch the jaws. Then starting with the inside
screw – wind it 1/4 to 1/2 a turn. Similarly wind outside screws until screws are
fully home. DO NOT OVERTIGHTEN. Repeat procedure on all four segments.
SPECIAL INSTRUCTIONS FOR COLE JAW RUBBERS
ACCESSORY JAWS & OPERATION
MINI COLE JAWS (Nova Sku: 6006) continued...
MOUNTING JAWS FOR ALL TEKNATOOL CHUCKS
See “Mounting the Accessory Jaws” in this manual.
Note: The four Cole Jaw diecast segments provided are all identical and so they
can be mounted in any sequence. Hence they are not numbered.You may find
it convenient to number them 1 – 4 in clockwise sequence when you have them
mounted on the chuck so that they can be put back in the same sequence each
time. The standard mounting screws that come with the Teknatool chucks can
be used for this purpose. If you wish, extra screws can be obtained by purchas-
ing the “Nova Fastening Spares Kit.” Check there is no light between jaw slides
and add on jaw segments or that one or more segments is not higher or lower
than the others. If this is the case, repeat the procedure as above.
WARNING
• DO NOT EXCEED 600 RPM WITH COLE
JAWS OR 800 RPM WITH MINI COLE
JAWS IN ANY OPERATIONAL MODE.
• OUT OF BALANCE STOCK MUST BE
TURNED AT THE SLOWEST SPEED
POSSIBLE BELOW 600RPM.
• DO NOT ATTEMPT TO USE THESE JAWS
IF YOUR LATHE DOES NOT HAVE A
USABLE SPEED OF 600 RPM OR BELOW.
• MAKE SURE THAT JAW SLIDES DO NOT PROJECT BEYOND CHUCK
BODY WHEN JAWS ARE EXPANDED.
• USE SPECIAL OPTIONAL WOODWORM SCREW DESIGNED FOR COLE
JAWS. THE NORMAL INCLUDED WOODWORM SCREW CAN NOT BE
USED WITH THE COLE JAWS.
• THE 20MM AND PIN JAW SET CAN NOT BE MOUNTED ON THE MINI COLE
OR COLE JAWS.
ACCESSORY JAWS & OPERATION
MINI COLE JAWS (Nova Sku: 6006) continued...
OPERATIONAL MODES
a. Contracting And Dovetail Modes
Both the contracting and dovetail modes are available when the other accessory
jaw sets (50mm, 75mm, 100mm) are mounted onto the Cole Jaws and used in the
normal way. The longer M6x20 screws provided with the Cole Jaws must be
used to secure the optional jaws to the Cole Jaws. Follow the usual operational
directions and safety requirements for the particular jaw set used (e.g 50mm,
75mm, 100mm). THESE INSTRUCTIONS AND SAFETY REQUIREMENTS CAN
BE FOUND IN THIS MANUAL.
b. Re-Chucking Using The Mini Cole Jaw
The Cole Jaw segment can be mounted on the chuck by themselves without the
use of any other jaw sets. Normal M6x10 Countersunk screws provided with your
Teknatool chuck to mount the other accessory jaw sets can be used.
WARNING
DO NOT ATTEMPT TO USE THIS FACILITY TO GRIP BOWL BLANKS WHICH
HAVE NOT BEEN FULLY TURNED INSIDE AND OUTSIDE. THE
RE-CHUCKING FACILITY CANNOT BE USED AS A GRIPPING METHOD TO DO
MAJOR RESHAPING WORK OVER THE WHOLE OUTER SURFACE OF THE
BOWL. ALWAYS USE A CAUTIOUS AND CONSERVATIVE APPROACH. USE
CORRECT CHISEL TECHNIQUES TO AVOID CHISEL DIG-INS WHICH COULD
DISLODGE THE BOWL. DO NOT USE HEAVY CUTS WHICH COULD ALSO
DISLODGE BOWLS.
If you want to mount another accessory jaw set (50mm, 35mm, 100mm) onto the
Cole Jaws use the four longer M6x20mm screws provided. Note the 20mm jaws
and pin jaws are not designed for use with Mini Cole and Cole Jaws.
Only when both the inside and outside of the bowl have been turned (these
operations can all be performed with the Cole Jaws in conjunction with another
optional accessory jaw set) can the bowl be re-chucked to rework the bottom
(outside) surface. Bowls up to 240mm (9.45”) in diameter for Cole Jaws, and
ACCESSORY JAWS & OPERATION
MINI COLE JAWS (Nova Sku: 6006) continued...
bowls up to 171mm (6-3/4”) in diameter for Mini Cole Jaws, can be re-chucked
gripping the rim in the contracting mode. If re-chucking is required to achieve a
smooth under surface of the bowl, it is best to have previously held the bowl by
foot mounting (contracting mode) as it is much easier turn off a foot, rather than
for example, a recessed dovetail. Foot mounting method is best achieved with
the Step Jaw or 100m (Cole Jaws only) Jaw Set.
c. Mounting Bowls
There are several radial positions available. The assembled rubber stoppers
need to be fastened so that they are screwed in flush against the jaw surface.
They need to be equally spaced at the same radial position on each segment to
achieve an even gripping of the bowl. The rubber stoppers will grip around the
rim of the bowl and contract downward. Refer to the directions in this manual in
the contraction mode. Make sure the whole rim of the bowl is seated flush
against the jaw surface so that it is being well supported and evenly gripped.
WARNING
THE RUBBER STOPPERS ARE A CONVENIENT HOLDING METHOD BUT
MUST ONLY BE USED TO RE-CHUCK SMALL, LIGHTWEIGHT BOWLS UP
TO 250MM (10”) IN DIAMETER FOR COLE JAWS; 200MM (8”) FOR MINI
COLE JAWS. CUSTOM WOODEN JAW SEGMENTS (MOUNTED ON COLE
JAWS). NO RESPONSIBILITY CAN BE ACCEPTED FOR USERS OWN
ADAPTIONS OF THIS CUSTOM FACILITY. IT IS THE USERS
RESPONSIBILITY TO TAKE ALL CARE TO ENSURE THAT A SAFE
MOUNTING OF BOWLS IS ACHIEVED.
If larger or heavy bowls need to be re-chucked, then you must make your own
wooden jaw segments. These should be fastened onto each jaw segment using
two screw positions. Give careful consideration to the type of holding situation
that is required before false wooden jaws are made to ensure adequate gripping
is achieved.
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