This manual has been prepared for the owner and operators of a Wilton 8014FW or 8020FW Band Saw.
Its purpose, aside from machine operation, is to promote safety using accepted operating and
maintenance procedures. To obtain maximum life and efficiency from your band saw and to aid in using it
safely, please read this manual thoroughly and follow the instructions carefully.
Warranty and Service
WMH Tool Group warrants every product it sells. If one of our tools needs service or repair, one of our
Authorized Repair Stations located throughout the United States can provide quick service or information.
In most cases, a WMH Tool Group Repair Station can assist in authorizing repair work, obtaining parts, or
perform routine or major maintenance repair on your Wilton product.
For the name of an Authorized Repair Station in your area, please call 1-800-274-6848, or visit our web
site at www.wmhtoolgroup.com
More Information
Remember, WMH Tool Group is consistently adding new products to the line. For complete, up-to-date
product information, check with your local WMH Tool Group distributor, or visit our web site at
www.wmhtoolgroup.com
WMH Tool Group Warranty
WMH Tool Group makes every effort to assure that its products meet high quality and durability standards
and warrants to the original retail consumer/purchaser of our products that each product be free from
defects in materials and workmanship as follows: 1 YEAR LIMITED WARRANTY ON ALL PRODUCTS
UNLESS SPECIFIED OTHERWISE. This Warranty does not apply to defects due directly or indirectly to
misuse, abuse, negligence or accidents, normal wear-and-tear, repair or alterations outside our facilities,
or to a lack of maintenance.
WMH TOOL GROUP LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD SPECIFIED ABOVE,
BEGINNING FROM THE DATE THE PRODUCT WAS PURCHASED AT RETAIL. EXCEPT AS STATED
HEREIN, ANY IMPLIED WARRANTIES OR MERCHANTABILITY AND FITNESS ARE EXCLUDED.
SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG THE IMPLIED WARRANTY LASTS,
SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. IN NO EVENT SHALL WMH TOOL GROUP
BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR INCIDENTAL,
CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR
PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL
OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY
TO YOU.
To take advantage of this warranty, the product or part must be returned for examination, postage
prepaid, to an Authorized Repair Station designated by our office. Proof of purchase date and an
explanation of the complaint must accompany the merchandise. If our inspection discloses a defect, we
will either repair or replace the product at our discretion, or refund the purchase price if we cannot readily
and quickly provide a repair or replacement. We will return the repaired product or replacement at WMH
Tool Group’s expense, but if it is determined there is no defect, or that the defect resulted from causes
not within the scope of WMH Tool Group’s warranty, then the user must bear the cost of storing and
returning the product. This warranty gives you specific legal rights; you may also have other rights, which
vary from state to state.
WMH Tool Group sells through distributors only. Members of the WMH Tool Group reserve the right to
effect at any time, without prior notice, alterations to parts, fittings and accessory equipment, which they
may deem necessary for any reason whatsoever.
2
Table of Contents
Warranty and Service ..............................................................................................................................2
Table of Contents ....................................................................................................................................3
Test Run ............................................................................................................................................ 10
Set .....................................................................................................................................................21
Speed and Pitch Chart...........................................................................................................................23
Typical Band Saw Operations................................................................................................................ 24
Troubleshooting – Mechanical and Electrical Problems..........................................................................26
Replacement Parts ................................................................................................................................29
Parts List: Band Saw Assembly (8014FW only) .................................................................................. 30
Band Saw Assembly (8014FW only)................................................................................................... 35
Parts List: Welder, Shear and Work Lamp Assemblies (8014FW only)................................................ 36
Welder, Shear and Work Lamp Assemblies (8014FW only) ................................................................39
Parts List: Band Saw Assembly (8020FW only) .................................................................................. 40
Band Saw Assembly (8020FW only)................................................................................................... 47
Band Saw Assembly (8020FW only)................................................................................................... 48
Parts List: Welder, Shear and Work Lamp Assemblies (8020FW only)................................................ 49
Welder, Shear and Work Lamp Assemblies (8020FW only) ................................................................52
Electrical Connections – Model 8014FW only.........................................................................................53
Electrical Connections – Model 8020FW only.........................................................................................54
3
Warning
1. Read and understand the entire owners manual before attempting assembly or operation.
2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with
all of these warnings may cause serious injury.
3. Replace the warning labels if they become obscured or removed.
4. This band saw is designed and intended for use by properly trained and experienced personnel only.
If you are not familiar with the proper and safe operation of a band saw, do not use until proper
training and knowledge have been obtained.
5. Do not use this band saw for other than its intended use. If used for other purposes, WMH Tool
Group disclaims any real or implied warranty and holds itself harmless from any injury that may result
from that use.
6. Always wear approved safety glasses/face shields while using this band saw. Everyday eyeglasses
only have impact resistant lenses; they are not safety glasses.
7. Before operating this band saw, remove tie, rings, watches and other jewelry, and roll sleeves up past
the elbows. Remove all loose clothing and confine long hair. Non-slip footwear or anti-skid floor strips
are recommended. Do not wear gloves.
8. Wear ear protectors (plugs or muffs) during extended periods of operation.
9. Some dust created by power sanding, sawing, grinding, drilling and other construction activities
contain chemicals known to cause cancer, birth defects or other reproductive harm. Some examples
of these chemicals are:
• Lead from lead based paint.
• Crystalline silica from bricks, cement and other masonry products.
• Arsenic and chromium from chemically treated lumber.
Your risk of exposure varies, depending on how often you do this type of work. To reduce your
exposure to these chemicals, work in a well-ventilated area and work with approved safety
equipment, such as face or dust masks that are specifically designed to filter out microscopic
particles.
10. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
11. Make certain the switch is in the OFF position before connecting the machine to the power supply.
12. Make certain the machine is properly grounded.
13. Make all machine adjustments or maintenance with the machine unplugged from the power source.
14. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting
wrenches are removed from the machine before turning it on.
15. Keep safety guards in place at all times when the machine is in use. If removed for maintenance
purposes, use extreme caution and replace the guards immediately.
16. Check damaged parts. Before further use of the machine, a guard or other part that is damaged
should be carefully checked to determine that it will operate properly and perform its intended
function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting
and any other conditions that may affect its operation. A guard or other part that is damaged should
be properly repaired or replaced.
17. Provide for adequate space surrounding work area and non-glare, overhead lighting.
18. Keep the floor around the machine clean and free of scrap material, oil and grease.
19. Keep visitors a safe distance from the work area. Keep children away.
20. Make your workshop child proof with padlocks, master switches or by removing starter keys.
4
blahblahblah
21. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are
careless acts that can result in serious injury.
22. Maintain a balanced stance at all times so that you do not fall or lean against the blade or other
moving parts. Do not overreach or use excessive force to perform any machine operation.
23. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for
which it was not designed. The right tool will do the job better and safer.
24. Use recommended accessories; improper accessories may be hazardous.
25. Maintain tools with care. Keep blades sharp and clean for the best and safest performance. Follow
instructions for lubricating and changing accessories.
26. Turn off the machine before cleaning. Use a brush or compressed air to remove chips or debris — do
not use your hands.
27. Do not stand on the machine. Serious injury could occur if the machine tips over.
28. Never leave the machine running unattended. Turn the power off and do not leave the machine until
the blade comes to a complete stop.
29. Remove loose items and unnecessary work pieces from the area before starting the machine.
30. Never place hands directly in line with the saw blade.
31. Always use push sticks when cutting small material.
32. Raise or lower the blade guide only when the machine has been turned off and the blade has stopped
moving.
33. Always wear leather gloves when handling saw blades. The operator should not wear gloves when
operating the machine.
34. Do not allow the saw blade to rest against the workpiece when the saw is not running.
35. The saw must be stopped and the electrical supply must be cut off before any blade replacement,
drive belt replacement, or any periodic service or maintenance is performed on the machine.
36. Remove cut off pieces carefully, keeping hands away from the blade. The saw must be stopped and
the electrical supply cut off or machine unplugged before reaching into the cutting area.
Familiarize yourself with the following safety notices used in this manual:
This means that if precautions are not heeded, it may result in minor injury and/or
possible machine damage.
This means that if precautions are not heeded, it may result in serious injury or possibly
even death.
- - SAVE THESE INSTRUCTIONS - -
5
Introduction
This manual is provided by WMH Tool Group covering the safe operation and maintenance procedures
for a Wilton Model 8014FW or 8020FW Band Saw. This manual contains instructions on installation,
safety precautions, general operating procedures, maintenance instructions and parts breakdown. This
machine has been designed and constructed to provide years of trouble free operation if used in
accordance with instructions set forth in this manual. If there are any questions or comments, please
contact either your local supplier or WMH Tool Group. WMH Tool Group can also be reached at our web
site: www.wmhtoolgroup.com.
Specifications
Model Number............................................................ 8014FW....................................................8020FW
Stock Number (220V) .............................................. 8014FW-2.................................................8020FW-2
Stock Number (440V) .............................................. 8014FW-4.................................................8020FW-4
Blade Speeds (SFPM) .................................................. 82-330...................... Low 65-555, High 390-3280
Height Capacity, Maximum (in.) ............................................. 8............................................................. 12
Throat Capacity, Maximum (in.) ........................................... 14............................................................. 20
Table Size (L x W)(in.) ..................................................20 x 20............................................... 24 x 22-1/2
Table Height at 90° (in.)....................................................... 39....................................................... 39-1/2
Floor Space Required (in.)............................................34 x 24 ..................................................... 42 x 29
Net Weight (lbs.)................................................................ 580 ......................................................... 1210
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, WMH Tool Group reserves the right to change specifications at any time and
without prior notice, without incurring obligations.
6
Features and Terminology
1 – Variable Speed Handwheel
2 – Fence
3 – Work Lamp
4 – Chip Blower Hose
5 – Guide Post Lock Knob
6 – Tension Handwheel
7 – Speed and Pitch Selector
8 – Upper Door
9 – Digital Readout
10 – On/Off Buttons
11 – Shear
Open shipping container and check for shipping
damage. Smaller parts are found in a separate
box at the foot of the band saw. Report any
damage immediately to your distributor and
shipping agent. Do not discard any shipping
material until the Band Saw is set up and
running properly.
Compare the contents of your container with the
following parts list to make sure all parts are
intact. Missing parts, if any, should be reported
to your distributor. Read the instruction manual
thoroughly for assembly, maintenance and
safety instructions.
Contents of the Shipping Container
1 Band Saw
1 Fence
1 Knob
1 Shear
1 Eye Bolt
1 Set of Hex Wrenches (3, 6, 8 and 10 mm)
1 Set of Keys (Model 8020FW only)
1 Owner's Manual
1 Warranty Card
Read and understand the entire contents of this manual before attempting set-up
or operation! Failure to comply may cause serious injury.
8
Installation and Assembly
Tools required for assembly:
Forklift or hoist with strap or chain
Set of hex wrenches (provided)
Remove all crating and plastic from around the
band saw. Remove any lag screws or holding
straps which secure the saw to the wood pallet.
Remove the eye bolt from the tool box, and
screw it into the hole at the top of the machine.
Lift the band saw from the pallet using a strap or
chain connected to the eye bolt.
Move the band saw to its permanent location
which should be dry, well ventilated, with
sufficient lighting. Leave enough space on all
sides to handle long stock or perform routine
maintenance on the machine. Make sure the
floor is level and able to support the weight of
the machine.
The Band Saw may be further stabilized by
securing it to the floor using lag screws (not
provided) through the tabs at the bottom.
Areas of the Band Saw have been given a
protective coating at the factory. This should be
removed with a soft cloth moistened with
kerosene or a mild cleaner/degreaser. Do not
use gasoline, paint thinner, or lacquer thinner as
these will damage painted surfaces. Do not use
an abrasive pad.
Fence
Place the fence (Figure 1) onto the groove in the
table as shown, and screw in the knob to tighten
the fence in position.
Shear
Remove the two socket head cap screws at the
back of the column, and use them to mount the
shear, as shown in Figure 2.
Grounding Instructions
Electrical connections must
be made by a qualified electrician in
compliance with all relevant codes. This
machine must be properly grounded to help
prevent electrical shock and possible fatal
injury.
This Band Saw must be grounded. In the event
of a malfunction or breakdown, grounding
provides a path of least resistance for electric
current to reduce the risk of electric shock.
Figure 1
Figure 2
9
Improper connection of the equipmentgrounding conductor can result in a risk of
electric shock. The conductor with insulation
having an outer surface that is green with or
without yellow stripes, is the equipmentgrounding conductor. If repair or replacement of
the electric cord or plug is necessary, do not
connect the equipment-grounding conductor to a
live terminal.
Check with a qualified electrician or service
personnel if the grounding instructions are not
completely understood, or if in doubt as to
whether the tool is properly grounded.
Make sure the voltage of your power supply
matches the specifications on the motor plate of
the Band Saw. This Band Saw should be
connected to a dedicated circuit. You may either
install a plug or “hard-wire” the Band Saw
directly to a control panel. If you are connecting
a plug, use a proper UL-listed plug suitable for
the voltage of the motor.
If the Band Saw is to be hard-wired to a panel,
make sure a disconnect is available for the
operator. During hard-wiring of the Band Saw,
make sure the fuses have been removed or the
breakers have been tripped in the circuit to
which the Band Saw will be connected. Place a
warning placard on the fuse holder or circuit
breaker to prevent it from being turned on while
the machine is being wired.
Test Run
After wiring the Band Saw, you should check
that the wires have been connected properly.
Connect machine to the power source and turn
it on for an instant to watch the direction of blade
movement.
If the blade runs upward instead of downward,
disconnect machine from power, and switch
any two of the three leads in the motor junction
box (see “Electrical Connections”, pages 53 and
54).
Extension cords
The use of an extension cord is not
recommended for this Band Saw. But if one is
necessary, make sure the cord rating is suitable
for the amperage listed on the machine’s motor
plate. An undersize cord will cause a drop in line
voltage resulting in loss of power and
overheating.
Recommended Gauges (AWG) of Extension Cords
Extension Cord Length *
25
50
75
100
150
Amps
< 5 16 16 16 14 12 12
5 to 8 16 16 14 12 10 NR
8 to 12 14 14 12 10 NR NR
12 to 15 12 12 10 10 NR NR
15 to 20 10 10 10 NR NR NR
21 to 30 10 NR NR NR NR NR
feet
feet
feet
feet
feet
200
feet
Use the chart in Figure 3 as a general guide in
choosing the correct size cord. If in doubt, use
the next heavier gauge. The smaller the gauge
number, the heavier the cord.
*based on limiting the line voltage drop to 5V at 150% of the
rated amperes.
NR: Not Recommended.
Figure 3
10
Adjustments
[NOTE: Procedures for the model 8014FW and
the model 8020FW are identical except where
noted.]
Blade Removal and Installation
Wear leather gloves when
removing or installing band saw blades. New
blades usually come in a coiled position; to
prevent injury, hold the blade with one hand
while carefully uncoiling it with the other.
1. Disconnect machine from power source.
2. Open upper and lower doors.
3. Loosen tension on the blade by turning the
tension handwheel (Figures 6 and 7) to the
left.
4. Remove the worn blade and install the new
blade, making sure the teeth face downward
where they pass through the slot in the
table.
5. Use the tension handwheel to tighten the
tension on the blade.
Figure 6
(Model 8014FW only)
6. Proceed with “Blade Tension” and “Blade
Tracking” before operating the band saw.
Guide Post
For effective cutting and for safety’s sake, there
should be a minimum amount of space between
the top of the workpiece and the bottom of the
blade guides. Loosen the guide post lock knob
(see Figure 6) and use the handle (handwheel
on 8020FW) to move the guide post, until the
guides clear the workpiece by about 1/8”.
Retighten the lock knob.
Blade Tension
1. Raise the guide post to its highest position.
2. Apply finger pressure to the blade. Travel
from vertical should be approximately 3/8”
each way.
3. Rotate blade tension handwheel (Figures 6
and 7) to the right to increase tension on the
blade, or to the left to decrease tension on
the blade.
[NOTE: The Model 8020FW has a tension
gauge, shown in Figure 7. Initially, set the
tension to correspond to the width of the
blade as indicated on the gauge. You may
later find it necessary to “fine-tune” this
setting depending upon the material being
worked.]
Figure 7
(Model 8020FW only)
11
Keep in mind that too much or too little blade
tension can cause blade breakage and/or poor
cutting performance.
If the band saw is to be idle for a period of time,
release tension on the blade – this will prolong
blade life.
Blade Tracking
Blade tracking has been tested at the factory but
should be checked as the machine receives
use, and after each blade change.
1. Disconnect machine from power source.
2. Move the upper and lower blade guides
away from the blade (see “Blade Guides”).
3. Open the top blade wheel door.
4. Rotate upper blade wheel by hand,
observing the position of the blade as it
rides upon the wheel. The blade should run
next to, but not against, the flange at the
rear of the wheel. Constant contact with the
flange will eventually damage the flange.
5. If the blade tracks improperly, use the
screws at the back of the saw (Figure 6) to
adjust the model 8014FW. Loosen the
socket head cap screws as needed to allow
adjustment of the set screws.
[Model 8020 FW: Use the tracking knob at
the back of the machine, shown in Figure 7.]
IMPORTANT:Tracking adjustments are
sensitive; make them in small increments and
allow the blade time to react to the changes.
6. When satisfied, return the upper and lower
blade guides close to the blade.
7. Close upper door, reconnect Band Saw to
power, and run it for a few moments. Make
any further tracking adjustments as needed,
with the machine disconnected from power.
Blade Guides
Blade guides must be
properly adjusted or damage may occur to
the blade and/or guides.
1. Loosen the two socket head cap screws on
the guide housing. See Figure 8.
2. Position the guide support in accordance
with the width of the blade. The blade
guides must be adjusted far enough back to
clear the blade even during the cutting
operation when the blade is deflected
toward the rear. The front end of the blade
guides should be adjusted approximately
1/8” behind the blade teeth. See Figure 8.
Figure 8
Figure 9
12
3. Tighten the socket head cap screws
securely.
4. This procedure should be done for both
upper and lower guide housings.
5. Open upper door and rotate the wheel by
hand until the weld portion of the blade is
between the two blade guides.
6. Loosen the socket head cap screws (Figure
9) on the blade guides.
7. Move the blade guides so they are as close
to the blade as possible without touching it.
8. Tighten the socket head cap screws (Figure
9). Make sure the air nozzle is still directed
properly toward the cutting area.
9. This procedure should be done for both
upper and lower blade guides.
As the blade guides receive use, they will
become worn at the front end. If the blade
guides become difficult to adjust, switch the left
and right blade guides (Figure 10).
The stopper positioned behind the back edge of
the blade (Figure 10) will also become worn with
use, and the friction of the shaft with the saw
blade may cause lines in the surface of the
stopper. If this occurs, loosen the socket head
cap screw, and rotate the stopper to either side
to change its position on the blade. Re-tighten
socket head cap screw.
Squaring Work Table with Blade
1. Place the table in horizontal position with “0”
on the scale.
2. Place a machinist’s square on the table and
against the blade, as shown in Figure 11, for
side-to-side squaring of the table. Place the
square against the edge of the blade for
front-to-back squaring.
3. If the square is not flush against the blade,
loosen either set of socket head screws
below the table (Figure 12) with a hex
wrench (provided). Make adjustments as
necessary, and tighten the screws.
4. Make sure the pointer is set at “0” on both
scales. If it needs slight adjustment, loosen
the screw and shift the pointer until it aligns
with “0”. Re-tighten the screw.
Figure 10
Figure 11
Figure 12
13
Replacing Drive Belts
(See Figure 13)
1. Disconnect machine from power source.
2. To remove the air compressor belt, loosen
the two hex cap screws (A, Figure 13) on
the mounting plate and tilt the air
compressor toward the motor. After
installing a new belt, tilt the air compressor
away from the motor to tension the belt, and
re-tighten the two hex cap screws.
3. To remove the motor drive belt, first
remove the air compressor belt (see above).
Then loosen the two lock nuts (B, Figure 13)
on the motor bracket. Lift up on the motor to
slacken and remove the belt. After installing
a new motor drive belt, push the motor back
down and tighten the two lock nuts.
4. To remove the variator belt, first slide the
motor drive belt off the variator pulley (see
above). Then lift up on the variator pulley
(Figure 13) to slacken the belt.
5. After installing new belts, make sure they
are tensioned properly and all screws or
nuts are re-tightened.
Work Lamp Bulb
The Work Lamp uses a standard medium-base
60 watt bulb (not provided).
Figure 13
(Model 8014FW)
Band Saw Operation
Consult “Features and Terminology” on page 7
for identification of the controls.
On the Model 8020FW, Unlock the control panel
using the provided keys.
Never operate the band saw
without blade guards in place and secured.
Blade Break-In Procedure
New blades are very sharp and, therefore, have
a tooth geometry that is easily damaged if a
careful break-in procedure is not followed.
Consult the blade manufacturer’s literature for
break-in of specific blades on specific materials.
The following procedure will be adequate,
however, for break-in of blades on lower alloy
ferrous materials.
1. Use a section of round stock.
2. Operate the saw at low speed. Start the cut
with a very light feed rate.
14
3. When the saw has completed about 1/3 of
the cut, increase the feed rate slightly and
allow the saw to complete the cut.
4. Keep the feed rate at the same setting and
begin a second cut on the same or similar
workpiece.
5. When the saw has completed about 1/3 of
the cut, increase the feed rate while
watching the chip formation until cutting is at
its most efficient rate (refer to “Evaluating
Cutting Efficiency” below). Allow the saw to
complete the cut.
6. The blade is now considered ready for use.
Setting Blade Speed
1. Consult the Speed and Pitch selection chart
on the front of the band saw. A chart is also
included on page 23 of this manual. Select
the speed setting for the material to be cut.
2. Model 8020FW: While the machine is NOT
running, move the gear selector lever
(Figure 15) to the required speed setting
(high or low).
Figure 14
(Model 8014FW only)
Move the gear selector lever
only when the machine is NOT running, to
prevent damage to the gearbox.
3. Start the saw using the pushbutton.
4. Turn the variable speed handwheel (Figures
14 and 15) to the required speed. Turning
the handwheel clockwise increases speed.
Turning counterclockwise decreases speed.
Rotate the speed setting
handwheel only when the band saw is
running.
Evaluating Cutting Efficiency
The best way to determine whether the blade is
cutting efficiently is to observe the chips formed
by the cutting.
• If the chip formation is powdery, then the
feed is much too light, or the blade is dull.
• If the chips formed are curled, but colored –
blue or straw colored from heat generated
during the cut – then the feed rate is too
high.
• If the chips are slightly curled and are not
colored by heat – the blade is sufficiently
sharp and is cutting at its most efficient rate.
Figure 15
(Model 8020FW only)
15
Welder Operation
Wear eye protection while
operating the welder. Use care when
handling the blade after welding to avoid
burns.
The welding procedure involves the following
steps: Shearing the blade, grinding teeth to
allow for the weld area, the actual welding,
inspection of the blade, annealing, grinding and
a final inspection of the blade. This procedure
can be accomplished using the shear and
welder assemblies on your band saw. Proceed
as follows:
Shearing
Cut the blade to the longest length needed for
the band saw. Using the shear to cut your blade
will ensure that the blade ends are cut flat,
square and smooth.
1. Place the blade in the shear as shown in
Figure 16. Make sure the blade is held
square with the shear knife, so that the cut
will be square with the blade.
2. Position the blade so that the cut is made at
a place that allows for uniform spacing of
the teeth. See Figure 17.
Figure 16
3. Push down the handle.
IMPORTANT: If a blade has been cut by using
snips, the ends of the blade must be ground
square before welding them together, as shown
in Figure 18.
Removing Teeth
In fine pitched blades, one or more of the teeth
on each side of the cut may need to be removed
by grinding so that the weld area of the blade is
uniform and the teeth will be uniformly spaced.
See Figure 17.
Welding
4. Carefully clean the ends of the blade which
will contact the welder jaws. Remove any
dirt, oil, scale and oxide.
Any rust on the blade in the
vicinity of the weld must be ground off
before the blade can be welded.
Figure 17
Figure 18
16
5. Turn pressure knob to “0” position (pointed
downward). NOTE: There will be some
resistance when turning the knob.
6. Insert one end of the blade in the left clamp
(Figure 19). Position the back edge of the
blade against the back edge of the left
clamp. Then position the end of the blade
midway between the left and right clamps.
Tighten the left clamp.
7. Insert the other end of the blade in the right
clamp. Position the back edge of the blade
against the back of the right clamp. Then
butt the end of the blade against the other
end of the blade (the blade ends need to be
in contact with each other). Tighten the right
clamp.
8. Set the pressure selector switch
(counterclockwise rotation) to the
approximate setting required for the width of
the blade being welded.
Keep hands clear of the weld area and the clamp jaws during welding.
9. Press and hold the weld button (Figure 19).
When the weld button is pushed, the clamps
move together to apply pressure to the
blade ends. At the same time, sparks will
come from the blade ends as they are being
welded. Do not release weld button until the
blade joint is “red hot.”
Figure 19
10. Release the weld button, and wait 3 or 4
seconds until blade returns to original color.
Unclamp the blade.
11. Rotate the pressure selector switch to “0”.
The welder is designed for
intermittent use. Repeated welding within a
short period of time may cause the welder to
overheat.
12. Remove the blade from the clamps, and
carefully inspect it. The spacing of the teeth
should be uniform and the weld should be
located in the center of the gullet.
Misalignment is easily noted at this time
from the weld appearance. See Figure 20
for examples of incorrect welds.
13. If the weld is imperfect, refer to the trouble-
shooting section on page 28 for possible
remedies to any problems. Make corrections
before annealing.
Annealing
The blade must now be annealed, or cooled at a
controlled rate to prevent it becoming too brittle.
Figure 20
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