Clarke MetalWorker CL300M Instruction Manual

OPERATION & MAINTENANCE
INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC1118 - ISS 6
VARIABLE SPEED METAL LATHE
MODEL NO: CL300M
PART NO: 7610700

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INTRODUCTION
Thank you for purchasing this CLARKE 300mm Metal Lathe.
The compact rugged construction and screw cutting capabilities, makes the
CL300M ideal for model makers etc, both professional and DIY alike.
The machine is capable of turning up to a maximum diameter of 180mm and
an overall length of 300mm. It is further capable of producing short tapers and
Imperial threads, both left and right hand. Metric threads may also be cut with
the addition of a Metric Conversion Kit, available from your Clarke dealer (see
‘Accessories’ for details).
Before attempting to operate this machine, please read this instruction
manual thoroughly and follow all directions carefully. By doing so you will
ensure the safety of both yourself and others around you, and at the same
time you should look forward to long and trouble free service from your lathe.
IMPORTANT: This manual is intended to instruct the user on the operations
peculiar to the CL300M lathe ONLY. Although some reference is made and
advice given, regarding various metal turning techniques, it should not be
regarded as a general tutorial on the subject.
IMPORTANT: It is assumed that the user has some knowledge of machinery
of this type and is familiar with metal turning. If this is not the case, we
strongly advise that he/she enrol in a course at a local education centre
where possible, or seek advice from a qualified person.
GUARANTEE
This CLARKE product is guaranteed against faulty manufacture for a period of
12 months from the date of purchase. Please keep your receipt as proof of
purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.
This guarantee does not effect your statutory rights.

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TABLE OF CONTENTS
Introduction 2
Guarantee 2
General Safety Precautions 4
Additional Safety Rules for Lathes 6
Electrical Connections 8
Overview 9
The Headstock 10
The Running Gear 11
The Tailstock 11
The Saddle 11
The Motor 12
Unpacking and Assembly 13
Mounting the Lathe 14
Operation - 16
Simple Turning 16
Using Power Feed 17
Bevel Cutting 20
Screw Cutting 20
Changing Gears for Screw Cutting 23
Gear Configurations 24
Gear Charts for Screw Cutting 25
Maintenance 27
Settings and Adjustments 28
Accessories 30
Parts List 32
Parts Diagram 35
Specifications 36
Wiring Diagram 37
Declaration of Conformity 38

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SAFETY WARNINGS
WORK ENVIRONMENT
1. Keep the work area clean and well lit. Cluttered and dark areas invite
accidents.
2. Do not operate power tools in explosive atmospheres, such as in the
presence of flammable liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
3. Keep children and bystanders away while operating a power tool. Anyone
entering the work area must wear personal protective equipment.
Distractions can cause you to lose control and fragments of work may fly
away and cause injury.
4. Store power tools properly when not in use. Sharp tools should be stored in
a dry, secure place out of the reach of children.
5. Please read these instructions carefully and retain for future reference.
ELECTRICAL SAFETY
1. Power tool plugs must match the outlet. Never modify the plug in any way.
Do not use adaptor plugs with earthed (grounded) power tools. Unmodified
plugs and matching outlets will reduce the risk of electric shock.
2. Do not expose power tools to rain or wet conditions. Water entering a
power tool will increase the risk of electric shock.
3. Do not abuse the power cable. Keep the cable away from heat, oil, sharp
edges or moving parts. Damaged or entangled cables increase the risk of
electric shock.
PERSONAL SAFETY
1. Stay alert, watch what you are doing and use common sense when
operating a power tool. Do not use a power tool while you are tired or
under the influence of drugs, alcohol or medication. A moment of
inattention while operating power tools may result in personal injury.
WARNING: FAILURE TO FOLLOW THESE PRECAUTIONS COULD RESULT IN
PERSONAL INJURY AND/OR DAMAGE TO PROPERTY.

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2. Use personal protective equipment. Always wear eye protection. Safety
equipment such as non-skid safety shoes, hearing protection and a
workshop apron capable of stopping small abrasive or workpiece
fragments.
3. Avoid accidental starting. Ensure the switch is in the off position before
plugging in. Plugging in power tools that have the switch on, invites
accidents.
4. Remove any adjusting key or wrench before turning the power tool on. A
wrench or a key left attached to a rotating part of the lathe may result in
personal injury.
5. Do not overreach. Keep proper footing and balance at all times. This
enables better control of the power tool in unexpected situations. Dress
properly. Do not wear loose clothing or jewellery.
6. Keep your hair, clothing and gloves away from moving parts. Loose
clothes, jewellery or long hair can be caught in moving parts. Keep the
work area clean and tidy.
7. Regularly clean the air vents. The motor fan will draw dust inside the
housing and accumulation of material could cause electrical hazards.
8. Avoid operator fatigue. Stop the lathe at regular intervals for a short break
to rest hands and arms.
9. Maintain your tools. Keep all handles dry and clean. Keep chisels sharp.
ELECTRICAL SAFETY
1. Position the power cable so that it cannot be inadvertently pulled or
pinched and where it does not cause a trip hazard.
2. This lathe is designed for indoor environments and must not be used for
other purposes.
3. If the lathe requires repair, always contact your Clarke dealer. Always insist
on original spare parts. Repairs carried out by unauthorized persons may
be dangerous and invalidate the guarantee.
4. This lathe must only be used by adults. Children should not be allowed to
play with the lathe.
5. Do not use extension power cables.
6. Before cleaning or maintenance operations, always unplug the lathe from
the power supply.
POWER TOOL USE AND CARE
1. Do not force the machine. Use the correct tool for your task. It will do a
better and safer job at the rate for which it was designed.

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2. Do not use the power tool if the switch does not turn it on and off. Any
power tool that cannot be controlled with the switch is dangerous and
must be repaired.
3. Disconnect the power tool from the power supply before making any
adjustments, changing accessories, or storing the tool. These measures will
reduce the risk of the power tool starting accidently.
4. Store power tools out of the reach of children and do not allow persons
unfamiliar with these instructions to operate the power tool. Power tools are
potentially dangerous in the hands of untrained users.
5. Maintain tools in top condition. Keep tools/ machines clean for the best
and safest performance. Check for misalignment or binding of moving
parts, broken parts, or any condition that may affect the power tool’s
operation. If damaged, have the power tool repaired before use. Many
accidents are caused by poorly maintained power tools.
6. Use recommended accessories. The use of improper accessories could be
hazardous.
7. Check the power tool for damage before using the machine. Any
damaged part should be inspected to ensure that it will operate properly
and perform its intended function. Check for alignment of moving parts,
breakage of parts, mountings, and any other condition that may affect the
machine’s operation. Any damage should be properly repaired or the part
replaced. If in doubt, DO NOT use the machine. Consult your local dealer.
SERVICING
1. When necessary, have your power tools serviced or repaired by a qualified
person using identical replacement parts. This will ensure that the safety of
the power tool is maintained.
ADDITIONAL PRECAUTIONS FOR LATHES
1. You should not operate this machine unless you are thoroughly familiar with
metal turning lathes and turning techniques. If there is any doubt
whatsoever, you should consult a qualified person.
2. NEVER attempt to turn a workpiece unless a suitable support is used.
ALWAYS stop the lathe before removing workpieces, work supports or swarf
from the table.
3. ALWAYS be sure that the workpiece is securely locked in position.
4. ALWAYS keep hands and fingers away from the moving workpiece.
5. Ensure all chuck keys, spanners and wrenches are removed from the lathe.
6. Examine the setup carefully, ensuring that nothing could possibly interfere
with the rotating workpiece.

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7. Ensure the tool post is secure and the cutting tool is adjusted to the correct
height.
8. Ensure the workpiece is properly secured.
9. Make all adjustments with the power OFF.
10. ALWAYS cut at correct speed for the size and type of material being
worked. Refer to a suitable turning manual for cutting speeds).
11. NEVER leave the lathe unattended whilst it is running.
12. When you have finished with machine always remove and store the
cutting tools.
13. When using a coolant in conjunction with the tray, on no account must
suds be allowed to enter the electrical system.
SAFETY SYMBOLS
The following safety symbols may be found on the machine.
Wear eye protection
Read instruction manual before use
ENVIRONMENTAL PROTECTION
Recycle unwanted materials instead of disposing of them as waste. All
unwanted accessories and packaging should be sorted and taken to a
recycling centre for disposal in a manner which is compatible with the
environment.
ENVIRONMENTAL RECYCLING POLICY
Through purchase of this product, the customer is taking on the
obligation to deal with the WEEE in accordance with the WEEE
regulations in relation to the treatment, recycling & recovery and
environmentally sound disposal of the WEEE.
In effect, this means that this product must not be disposed of with general
household waste but according to the laws governing Waste Electrical and
Electronic Equipment (WEEE) at a recognised disposal facility.

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ELECTRICAL CONNECTIONS
Before switching the product on, make sure that the voltage of your electricity supply is
the same as that indicated on the rating plate. This product is designed to operate on
230VAC 50Hz. Connecting it to any other power source may cause damage.
This product may be fitted with a non-rewireable plug. If it is necessary to change the
fuse in the plug, the fuse cover must be refitted. If the fuse cover becomes lost or
damaged, the plug must not be used until a suitable replacement is obtained.
If the plug has to be changed because it is not suitable for your socket, or due to
damage, it should be cut off and a replacement fitted, following the wiring instructions
shown below. The old plug must be disposed of safely, as insertion into a mains socket
could cause an electrical hazard.
If the colours of the wires in the power cable of this product do not correspond with the
markings on the terminals of your plug, proceed as follows.
• The wire which is coloured Blue must be connected to the terminal which is
marked Nor coloured Black.
• The wire which is coloured Brown must be connected to the terminal which
is marked Lor coloured Red.
• The wire which is coloured Yellow and Green must be connected to the
terminal which is marked E or or coloured Green.
We strongly recommend that this machine is connected to the mains supply
via a Residual Current Device (RCD)
If in any doubt, consult a qualified electrician.
WARNING: READ THESE ELECTRICAL SAFETY INSTRUCTIONS
THOROUGHLY BEFORE CONNECTING THE PRODUCT TO THE MAINS
SUPPLY.
WARNING: THE WIRES IN THE POWER CABLE OF THIS PRODUCT ARE
COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:
BLUE = NEUTRAL BROWN = LIVE YELLOW AND GREEN = EARTH
Plug must be BS1363/A approved.
Always fit a 13 Amp fuse.
Ensure that the outer sheath of the cable is firmly held by the clamp
Neutral
(Blue)
Live
(Brown)
Earth
(Green and Yellow)

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OVERVIEW

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PARTS IDENTIFICATION
THE HEADSTOCK
The motor provides a direct drive to the Spindle via an internal tooth type belt.
Spindle speed is variable and is regulated by the Speed Control Knob (23),
located on the main control panel.
The spindle is provided with an internal No.3 Morse taper to accommodate a
centre for use with a face plate or turning clamp, (See ‘Accessories’ on page
30).
The Chuck Guard (3), is an essential component and is mounted on a pin
which is secured to the headstock by two screws. This should always be in
place when using a chuck.
The 3-Jaw, Self Centering Chuck (4) is mounted on the Spindle Flange (2). To
remove the chuck, simply remove the three securing nuts to the rear of the
flange allowing it to be pulled free together with the three mounting studs.
Three external jaws are also supplied which extend the capacity of the chuck.
Their uses and method of assembly is described under ‘Accessories’ on page
30.
The spindle has 6 holes drilled in its flange to accommodate a range of fixtures
such as a Face Plate, 4-Jaw chuck etc, (See ‘Accessories’ on page 30).
1 Headstock 15 Automatic Feed Lever
2 Spindle Flange 16 Cross-Slide Feed Handle
3ChuckGuard 17Apron
4 3-Jaw Chuck 18 Manual (Saddle) Feed Handle
5 Tool Post 19 Leadscrew
6 Cross-Slide 20 Motor Brush Cap
7 Compound Slide 21 Thread Dial Indicator Table
8 Tailstock Centre 22 Running Gear Cover
9 Tailstock 23 Variable Speed Control Knob
10 Tailstock Securing Nut 24 Forward/Off/Reverse Switch
11 Bed 25 Emergency Stop Switch
12 R.H. Leadscrew Bearing 26 High/Low Speed Range Lever
13 Compound Slide Feed Handle 27 Leadscrew Fwd/Neutral/Reverse
Lever
14 Thread Dial Indicator 28 Overload indicator

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THE RUNNING GEAR
The Running Gear is protected by a cover (22), which is removed by
unscrewing the two securing hex screws.
The gear train is shown in Fig. 2. It
transmits drive to the lead screw
which acts as a worm gear and by
operating the Auto Feed Lever (15),
which engages a nut with the lead
screw (worm), drive is transmitted to
the saddle and consequently the
cutting tool. This provides a power
feed for screw cutting or general
turning operations.
The rotational speed of the lead
screw and hence the rate of feed of
the cutting tool, is determined by the
gear configuration. This is explained in
greater detail under ‘Screwcutting’
on page 20.
The drive to the leadscrew may be
disconnected by operating the lever
(27), which is also used to drive the
leadscrew in a forward or reverse
direction. (These actions are described in greater detail under ‘Screwcutting’
on page 20.
THE TAILSTOCK
The Tailstock (9), may be moved along the bed to any desired position and is
secured in position by a single nut (10), at its base. The Tailstock Spindle carries
an internal No.2 Morse taper for use with the Centre (8) provided.
A Revolving Centre and Drill Chuck are also available from your Clarke dealer.
(See Accessories on page 30).
THE SADDLE
The Saddle carries the Cross-Slide (6), on to which is mounted the Compound
Slide (7) with Tool Post (5), allowing intricate and delicate operations to be
performed. It may be driven by the Leadscrew, via a Drive Nut, to provide
automatic feed when the Auto Feed lever (15), mounted on the Apron (17), is
operated.
The position of the tool is effected by turning the cross-slide feed handle (16),
which moves it across the lathe and the saddle or manual feed handle (18),
which moves it longitudinally.

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Additionally, the compound slide feed handle (13) may be used to move the
tool by small amounts at right angles to the cross-slide, or the slide may be set
at an angle to the cross-slide so that short tapers or bevels may be cut. This is
described in greater detail under ‘Bevel Cutting’ on page 20.
The cross-slide and compound slide feeds are provided with a scale. These are
used to move the tool by precise amounts - one division being equivalent to
0.001” (0.025mm). As the feed handle is turned, so does the scale. The scale
on the cross-slide feed may also be held stationary whilst the handle is turned,
allowing the scale to be ‘zeroed’. The manner in which this is put to use is
discussed in greater detail under ‘Operation’.
The tool post carries 8 hex socket
head screws which are used to secure
a cutting tool in any desired position.
Four may be mounted for
convenience and to speed up your
operation. Two are shown mounted in
fig.3.
The tool post is rotated by slackening
the lever (A) on its top, sufficient for
the post to be lifted slightly and then
turned to the desired position.
Always ensure the post and hence
the tool, is secured by screwing down
the lever firmly before attempting to
cut.
THE MOTOR
It is not recommended that you dis-assemble the motor. Brushes may be
replaced as described under ‘Maintenance’. For all other servicing and
repairs, please contact your Clarke dealer.
THE OVERLOAD INDICATOR
The overload indicator will light up
when excessive strain is placed on the
motor.
If the overload indicator lights up you
should, decrease the amount of
material you are trying to remove.

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UNPACKING AND ASSEMBLY
On receipt, carefully unpack the lathe. Inspect to ensure that no damage was
suffered in transit and all parts are accounted for. Should any damage be
apparent or parts are missing, please contact your Clarke dealer immediately.
The following loose items are to be
found in the crate.
1. 4 x Rubber Feet*
2. 4 x M6 Pan Head Scews*
3. 4 x Hex. Keys
4. 1 x Chuck Key
5. 1x Plastic Oil Container*
6. 1 x Spare Fuse - 2 amp, glass type.*
7. 2 x Plastic Handles w/Nuts and Bolts.*
8. No.2 Morse Taper Centre (for Tailstock)
9. 3 x External Jaws (for 3-Jaw Chuck)
10. 2 x Double Open Ended Spanners 8x10mm and 14x17mm
11. 1 x Gear Set. Sizes: 30, 35, 40, 40, 45, 50, 55, 57, 60, 65 Teeth
* denotes not illustrated
With assistance, considering the weight of the lathe, raise it on to a robust
surface or workbench. Proceed to remove all traces of preservative with
paraffin or good quality solvent and lightly oil all machined surfaces.
You will notice that for transit purposes, the cross slide feed handle has been
mounted in reverse. Remove it, by unscrewing the hex. socket head screw
securing it and mount it the correct way round. Then turn all feed handles to
ensure they are free and move evenly and smoothly.
Attach the plastic handles to the rims of the manual feed and tailstock feed
handwheels respectively, ensuring the nuts are tight and the handles spin
freely about the bolts, without excessive end play.
The saddle, cross-slide and compound slide adjustments are all factory set to
ensure smooth movement in both directions. If however, the adjustments have
been upset during transit, indicated by stiff or erratic movement, refer to
‘Settings and Adjustments’ on page 28 for the methods of adjustment.
All hex. keys and spanners necessary to carry out various adjustments are
supplied, together with a chuck key for the 3-Jaw chuck and a spare 2 Amp
fuse. The fuse holder is located on the main control panel.

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The hinged transparent chuck guard is supplied loose and must be fitted to
the headstock body using the screws provided.
The four rubber feet are attached to the underside of the bed using the four
M6 pan head screws in the tapped holes provided. These screws are also used
to secure the collecting tray. We strongly recommend however, that to
provide maximum stability and additional safety, you secure the lathe to a
firm foundation as described under ‘Mounting the Lathe’.
The three external jaws for the 3-jaw self centering chuck, extend the capacity
of the chuck and are discussed in greater detail under ‘Accessories’ on page
30.
MOUNTING THE LATHE
The lathe should be mounted on a strong, heavy workbench of sufficient
height so that you do not need to bend your back to perform normal
operations. Take the necessary precautions when moving the lathe
considering its’ weight. Assistance will be required.
Ensure the location is adequately lit and that you will not be working in your
own shadow.
We strongly recommend that the machine is bolted firmly to a strong
workbench using the tapped holes used to secure the feet to the lathe. This is
to provide added stability and therefore additional safety.
To do this, remove the four M6 screws which secure the rubber feet and
collection tray to the machine (if already fitted) and discard the feet.
Drill four M6 clearance holes in a
worktop, at the dimensions shown in
the diagram, and with appropriate
length M6 bolts, or screws with flat
washers, (not supplied), secure the
lathe to the worktop ensuring the
collection tray is in place.
Alternatively, if you do not want a
permanent installation, you may
secure the lathe to a 5/8” thick
plywood board with a minimum recommended dimension of 800 x 300mm,
the mounting holes being centralised on the board.
When the lathe is in use the board should be clamped to workbench using
‘G’ clamps.

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DURING INSTALLATION - INITIAL START
1. Taking all precautions previously
stated, set the High - Low range
lever (item 26 page 10)’ to LOW.
2. Ensuring the cross-slide is well away
from the chuck and the automatic
feed lever is in its dis-engaged
position, (i.e. lever is UP). Insert the
electric plug into it socket.
3. Select O, using the Forward/O/
Reverse (F/O/R) switch (C) on the
main control panel.
4. Turn the Speed Control (A) fully anti-clockwise to the 0 R.P.M. position.
5. Release the Emergency Stop switch by pushing down on the red knob
slightly and pushing it in towards the headstock as indicated by the arrow
on the top of the red knob (B).
6. Select Forward on the F/O/R switch and GENTLY rotate the variable speed
knob (A) clockwise. Speed will increase progressively the further the knob is
turned.
7. Run for a total of 5 minutes during which time gradually increase spindle
speed to its maximum. Run for at least 2 minutes at this speed before
stopping the machine and disconnecting from the mains supply.
8. Check that all components are still secure and working freely and
correctly.
9. Check also to ensure the mountings are secure.
10. Repeat the procedure at the HIGH range setting
Should any adjustments be necessary refer to the appropriate section under
Settings and Adjustments.
NOTE: When changing from HIGH to LOW range, it may be necessary to turn
the spindle by hand, in order for the gears to mesh correctly.
CAUTION: NEVER ATTEMPT TO CHANGE FROM HIGH TO LOW RANGE
WITH THE MACHINE RUNNING.

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STARTING UNDER NORMAL CONDITIONS
1. Take all necessary precautions previously stated, and ensure the
workpiece can rotate fully without obstruction.
2. Set the Speed Range control lever to HIGH or LOW as required.
3. Set the Forward/O/Reverse (F/O/R) switch (C), on the main control panel,
to the O (OFF) position.
4. Engage or ensure the Auto Feed lever is dis-engaged depending upon
whether or not automatic feed is required.
IMPORTANT: This should ALWAYS be a deliberate, conscious action.
NOTE: If Auto feed is required, the Leadscrew Forward/Neutral/Reverse Lever
should be set to FORWARD. If Auto feed is not required the lever may be
set to Neutral. To do this, grasp the knurled handle and pull out against
spring pressure. Holding the handle in this position, move the lever until
the point on its end, locates in the middle pit mark in the casing.
5. Proceed to start the machine as described previously.
6. To stop the machine, turn the Variable Speed Control knob (A) to the 0
RPM position and the F/O/R switch (C) to O (OFF).
CAUTION: ALWAYS TURN THE VARIABLE SPEED CONTROL KNOB TO 0 RPM
AND THE FORWARD/OFF/REVERSE SWITCH TO O (OFF) BEFORE
ATTEMPTING TO CHANGE ANY SETTINGS OR MAKE ANY ADJUSTMENTS.
THIS INCLUDES CHANGING FROM HIGH TO LOW OR LOW TO HIGH
RANGE.

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OPERATION
SIMPLE TURNING
Before starting the machine, it is imperative that the setup for the type of work
to be carried out is fully checked.
The following notes are guidelines as
to how to set up the lathe in order to
carry out a simple turning operation.
ALWAYS plan your work. Have
drawings or a plan on hand together
with any measuring instruments you
may require, such as micrometers/
verniers/calipers etc.
Select a cutting tool that will produce
the desired cut and mount it in the
Tool Rest, with as little overhang as
possible, securing it using three hex
socket head screws as shown in FIG. 6.
(Ideally, the overhang should be
approx. 10 mm but not more than 15mm for a straight tool).
It is essential that the tip of the cutting tool is on the centre line of the work or
very slightly below it. On no account should it be above the centre line. Where
necessary, shims should be used beneath the tool in order to achieve the
correct height, or, if the tip is too high, the only recourse is to select another
tool or grind down the tip.
To check to ensure the tip is at the correct height, position the tool so that the
tip is almost touching the point of the tailstock centre. They should coincide. If
necessary make adjustments using shims, grind down the cutting tool tip or
select another tool.
When satisfied, mount the work, either in the chuck or on a faceplate, and if
necessary, use the tailstock centre for additional support (If the work cannot
be adequately secured by the chuck, or if it is a long piece, or of small
diameter). Additionally, ‘Steadies’ may be used which are described in
greater detail under ‘Accessories’.
If the tailstock is not to be used you may remove it completely by slackening
off the securing nut at its base and sliding it free of the bed.
Mark the surface of the work at the point where the cut is to end, i.e. the
shoulder, using a scriber or similar means, and move the saddle so that the
cutting tool is directly opposite the mark, then wind in the cross-slide so that
the tool touches the surface of the work.

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Whilst carrying out these manoeuvres, rotate the chuck by hand to ensure
that nothing will come into contact with it when turning takes place, i.e. there
is adequate clearance between the saddle, cross-slide, tool post or cutting
tool, and the chuck.
It may be necessary to adjust the position of the compound slide or reposition
the work in the chuck to guarantee that there is adequate clearance.
When satisfied, retract the cutting tool
and wind the saddle away from the
headstock. Wind the cutting tool up
to the work, somewhere along the
length to be cut, whilst rotating the
work by hand using the chuck.
Continue to advance the cutting tool
slowly until it just touches the surface.
Record this position by zeroing the
scale on the cross-slide, i.e. turn the
moveable scale until the zero marks
coincide, (see diagram).
Once zeroed, retract the cross-slide
one complete turn, then move the
saddle until the tool is a short distance from the right hand edge of the work.
Wind in the cross-slide again one full turn until the zero marks again coincide.
IMPORTANT: If you go past the zero marks, back off again at least one half
of a turn, then slowly bring the marks back together.
Whenever you use the scale, as an indicator, to advance the cross-slide or
compound slide, ALWAYS use this procedure to align the marks. This is to take
into account backlash and other clearances in the gearing and slides etc.
Continue to turn the handle an amount equivalent to your desired depth of
cut.
NOTE: We recommend that for rough cutting, you do not exceed 0.010” as
your depth of cut.
The setup is now complete to begin your cutting operation, but before
starting, check the position of:
• Auto feed lever. Ensure it is in the UP position for manual feed.
• Forward/Neutral/Reverse leadscrew lever. If Auto feed is not required,
set to Neutral’.
• HIGH/LOW lever. Select required speed range.
Switch the machine ON as described under ‘Starting Procedure’ and slowly
feed the cutting tool into the work using the Manual Feed Handle. Proceed

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until you reach the previously marked line on the work, then retract the tool
one or two complete turns on the Cross-Slide feed handle.
Wind the saddle back to the beginning then wind the tool the same number
of turns ‘IN’, plus the depth of desired cut, and proceed to cut once more.
NOTE: This describes the procedure for general rough cutting. For other types
of cuts - finishing, cutting shoulders etc, you should consult a suitable
handbook.
SIMPLE TURNING WITH POWER FEED
The same basic setup is used as described above except that before starting,
the Leadscrew F/N/R Lever (25) is set to the ‘Forward’ position and the Auto
Feed Lever (15), is operated in order to drive the saddle.
As mentioned previously, the rotational speed of the leadscrew and hence
the rate of feed of the tool, is dependant upon the gear configuration of the
gear train.
The feed rate for normal turning is considerably less than that used for screw
cutting. The lathe is factory configured for normal turning, however, if you
have been screw cutting, always remember to reset the gear configuration to
that for normal turning. Please refer to the chart on page 24 which shows the
gear configuration and the explanation of how to change the gears on the
same page.
1. Taking all precautions previously mentioned, position the cutting tool a
short distance to the right of the workpiece with the appropriate depth of
cut set on the cross-slide.
2. Ensure the leadscrew F/N/R lever is set to ‘Forward’ and select ‘Forward on
the Forward/Off/Reverse switch on the main control panel. Release the
Emergency Stop and switch ‘ON’ the speed control knob.
3. Turn the knob to achieve your desired spindle speed, and with your right
hand, push down on the auto feed lever until the nut becomes firmly
engaged with the leadscrew.
IMPORTANT: Your left hand should always be free in order to hit the
emergency stop should it become necessary.
4. Carefully observe the movement of the tool and as it approaches the mark
on the surface, denoting the end of cut, pull the Auto Lever UP sharply and
ensure it stays UP. If a degree of accuracy is required it is recommended
that you finish the cut by hand.
NOTE: If you require a shoulder with perfectly clean corners, then you need to
use an appropriately shaped tool.
5. Retract the tool one or two complete turns on the cross-slide feed, then
wind the saddle so that the tool is at the start point once again. Advance

20
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the tool the same number of turns, plus the depth of cut and when ready,
push down the auto feed lever and proceed to take another cut.
BEVEL CUTTING
Bevel cutting involves the use of the
compound slide. This is mounted on
the cross-slide and set at right angles
to it for all normal cutting operations.
This is indicated by the zero mark on
the scale, (B, Fig. 8), lining up with the
mark etched on the body of the cross-
slide.
To set the compound slide so that the
cutting tool will cut a bevel, first
retract the slide until the two hex.
socket head screws (A), are revealed
as shown in Fig 8.
Slacken the screws sufficient to allow
the compound slide to be turned to
the desired angle as indicated on the
scale and secure the slide in this
position by re-tightening the hex.
socket head screws.
The taper, or bevel, is cut by setting
the cross slide appropriately then
using the compound slide feed
handle to advance the cutting tool in
the direction of the arrow as shown in
Fig 9.
SCREWCUTTING
This operation requires a degree of skill and accuracy and should not be
attempted unless you are completely familiar with all aspects of the lathe.
Essentially, the saddle will move towards the headstock under power, the
same as cutting using auto feed, except the rate of feed is greater as
determined by the gear configuration. The cutting tool therefore, is moving
ever closer to the rotating chuck. Great care and concentration must be
exercised to ensure that the two do not meet when the machine is operating
as the possible damage caused could be disastrous.
The lathe is supplied with a leadscrew that will produce Imperial Threads in a
range from 12 to 104 threads per inch. It is important to remember that the
type of thread you need to cut, i.e. UNF, BA, BSP, BSW etc, will be totally