Nova 48202 Gebrauchs- und Pflegehandbuch PDF herunterladen (Seite 2)

TEKNATOOL

INTERNATIONAL Ltd.

www.teknatool.com

NOVA G3 CHUCK

You can register your warranty online by visiting www.teknatool.com

This Teknatool warranty is backed by a period of twenty-four months from the date of purchase. Teknatool International Ltd hereby agrees to make repairs or replace components without

charge for any defects due to faulty material or workmanship, provided that - a) The warranty period has not elapsed. Proof of purchase date (sales slip, registration of warranty etc) would

need to be forwarded to Teknatool International. b) If, in our opinion, the unit has not already been altered, repaired or modified in any way that would affect it’s operation; has not been

subjected to misuse, negligence, accident or not used strictly in accordance with instructions. c) Where necessary, transportation is prepaid by the customer to the Factory Service Centre

(or other uthorised Teknatool Service Centre)

Warranty does not cover costs or damages arising directly or indirectly from the operation of this Teknatool product. No other guarantee, written or verbal is authorised by Teknatool

International Ltd. Our Teknatool Distributors can issue their own warranty to cover this product. Their terms may vary from what is stated above - please check with your dealer if you have any

questions. Email our service contact: [email protected]. Our policy is one of continuous improvement. We therefore reserve the right to change specifications/designs without notice.

WARRANTY Serial Number:

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SPECIFICATIONS

Thread Sizes: 1”8

tpi, 3/4”16 tpi and

insert version.

Warranty: 2 Year

Comprehensive -

see details

Weight: 1.53kgs/

3.373lbs on spindle.

Body Diameter:

88,mm/3.48”

Standard Equip-

ment: Chuck body,

50mm jaws, chuck

key, fastenings,

instruction manual.

See back of this sheet

for the instruction

manual.

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

Ideal for your

Woodturning

Fits Nova &

SuperNova

Accessories

Fully compatible with

all Nova, SuperNova

and SuperNova

accessories. Widest

accessory range of

any chucking system

on the market means

you can tackle a

wide range of

projects.

It’s not recommended to

use the larger Teknatool

Accessory Jaws with

this chuck.

See manual for more

VERSATILE

Ideal for mini, midi

and all lathes up to

7” centre height (14”

diameter over bed)

Can also be used for

small work on larger

lathes. SuperNova

and Titan chucks are

recommended for

larger work. See

website or reseller for

more information.

IDEAL LATHE SIZE

Screw chucking

function, using the

Nova Woodworm

Screw (included with

chuck) For the first

stage mounting of

wooden bowl blanks.

WOODWORM SCREW

Screws directly

into your lathe

spindle (same as

a faceplate)

Available in

popular 1”8TPI

RH and

3/4”16TPI threads

as well as insert

versions.

USING THE WOODWORM SCREW (contd.)

To convert to this operation , place the boss section into the centre of the chuck and close

jaws into the slots. BEFORE FINAL TIGHTENING MAKE SURE THAT THE FRONT OF THE

BOSS SECTION OF THE SCREW IS SEATED BEHIND AND AGAINST THE 50mm (2

INCHES) 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 9/32” (7mm) for soft woods

and 5/16” (8mm) 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 exercised. Check for adequate

contact. DO NOT USE THE SCREW FOR VERY LARGE WOOD BLANKS. Its intended for

small bowl and screw chucking work. The maximum capacity which should be mounted

on the screw is 250mm (10 inches) diamter X100mm (4 inches). DO NOT EXCEED 600

RPM FOR THIS OPERATION, and use tailstock with a live centre for support.

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.

Instructions below apply to the standard 50mm (2 inches) 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 manual or instruction sheets. With the standard set of

50mm (2 inches) jaws a maximum size woodblank of 100mm (4 inches) diameter (NOT spigot

size) by 150mm (6 inches) length can be turned. Square timber of same length and between

40mm (1.5 inches) to 50mm (2 inches) 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 49/64inches) to 65mm (2 5/16 inches)

approx. Square timber between 40mm (1 37/64inches) to 50mm (2 inches) square approx.

Jaw slides only - With the 50mm (2 inches) add-on jaws removed, the jaw slides will grip either

round or square timber down to 8mm (5/16inch). 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 maximise 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 inches) 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.

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 below. 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 pencil, 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 inches) - 75mm (3 inches) so

exact sizing of the recess is unnecessary.

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.

Use pinion handle to give an give an extra nip up. Refer to Chuck Operation. Refer again to safety

before operation.

FITS MOST LATHES

Ideal for Mini,

Midi and all

lathes up to 14”

swing over bed

Fast, strong

geared grip

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

easy to use

versatile

1 2

NOVA G3 CHUCK 1
INSTRUCTION MANUAL 1

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