Model X-390
Operating Guide
IMPORTANT:
Read ALL Directions Before Using
Revised 9/2008
CONTENTS
Safety warnings 3
Grounding instructions 4
Extension cords 4
Generators 4
Machine description and specifications 5
Blade and skid plate installation 7
Operating instructions 8
Maintenance 10
Sawing joints 12
Trouble shooting 13
Warranty 14
Maximizing the Soff-Cut system 15
Manufacturer Husqvarna CP Soff-Cut
265 Radio Road
Corona, CA 92879
USA
Model X-390
Serial number _____________________
Year manufactured _____________________
2
WARNING: Failure to comply with the following warnings could result
in serious bodily injury or death!
SAFETY WARNINGS
PERSONAL SAFETY
• Read and understand instructions before operating saw.
• Always wear safety approved hearing, eye, head and
respiratory protection.
• Wear boots with non-slip soles to provide proper footing.
Steel-toed safety boots are recommended.
• Wear rubber work gloves to avoid contact with wet
concrete which can cause serious skin irritation.
• Know how to stop the saw quickly in case of emergency.
• Keep all parts of your body away from blade and other
moving parts. Do not wear loose clothing or jewelry
which can be caught in moving parts. Wear protective
hair covering to contain long hair.
• Use caution when loading and unloading saw.
• Stay alert. Maintain awareness of saw operation. Use
common sense. Do not operate saw when tired or after
consumption of any substance that would impair physical
function or rational judgment.
• Do not over reach. Keep proper footing and balance.
• Guard against electric shock. Prevent body contact with
grounded surfaces such pipes, conduit, radiators, etc.
WORK AREA SAFETY
• Never operate the saw in any application or job where you
are not trained or supervised.
• Keep visitors, children and animals out of the work area.
• Do not operate the saw in areas of combustible material or
fumes. Sparks may occur from the saw that could cause a
fire or explosion.
• The motor and saw can become hot during operation.
Keep all body parts and foreign material away from the
saw while running.
• Avoid dangerous environments. Do not use the saw in
damp or wet locations. Do not expose saw to rain. Keep
work area well lit and clean.
• Use only extension cords suitable for outdoor use and
marked with a suffix W-A or W.
• Before connecting the saw to a power source (receptacle,
outlet, etc.) insure the voltage supplied is the same as that
specified on the saw nameplate. A power source with
voltage greater than specified on the saw can result in
serious injury as well as damage to the saw. If in doubt,
do not use the saw. Using a power source with voltage
less than the saw nameplate is harmful to the motor.
• The saw must be plugged into an outlet properly installed
and grounded in accordance with all codes. Never modify
the plug in any way. Do not use adaptor plugs. Check
with a qualified electrician if you are in doubt.
SAW SAFETY
• Do not leave saw unattended while the motor is running.
• Do not alter the saw. Any alteration or modification is
misuse and may result in a dangerous condition.
• All safety guards must be in place before starting saw.
• Only operate the saw from behind the machine with both
hands on the handle.
• Do not use damaged equipment, blades, gu ards or
personal protection equipment. Do not disable safety
equipment or kill switches.
• Use only Soff-Cut International, Inc. replacement parts.
Use of unauthorized parts may create a danger.
• Remove all wrenches from the saw before starting.
• Never stand on the saw.
• When the saw is not in use or transporting, remove the
blade and properly secure the saw to prevent accidental
movement.
• Disconnect the electric cord to the saw and put the safety
switch in off (red) position when not in use, before
servicing, and when changing or installing blades.
• Do not abuse the electric cord. Never carry the saw by
the cord or yank it to disconnect from the receptacle.
Keep cord from heat, oil, or sharp edges. Inspect cord
periodically and do not use saw if damaged.
BLADE SAFETY
• Examine cutting blades before each use. Do not use any
blade that has cracks, nicks, or flaws. Tri-arbor hole
should be undamaged. Use only dry cut, steel centered,
tri-arbor diamond blades made for cutting green concrete.
• Soff-Cut International, Inc. diamond blades are designed
to only cut green concrete. Cutting any other material
may result in blade failure or a dangerous condition.
• Inspect blade flanges for damage, excessive wear and
cleanliness before mounting the blade. The blade should
fit snugly on clean, undamaged, tri-arbor shaft.
• Use only Soff-Cut blades or blades marked with a
maximum operating speed greater than 7000 rpm.
• Never operate the saw without the blade guard assembly
securely in place including blade cover, front diverter and
skid plate installed in working order. A damaged blade
guard assembly must be replaced to protect the operator.
• Make sure the blade does not make contact with the
ground or any other surface when maneuvering the saw.
• Avoid contacting the blade while it is rotating.
• Do not force, jam or twist the blade while cutting.
3
GROUNDING INSTRUCTIONS
Grounding of the X-390 electric saw is necessary while in use to protect the operator from electric shock or electrocution. The
saw is equipped with an approved three-conductor cord and a three-prong grounding type plug to fit the proper grounding type
receptacle. Do not remove the grounding prong from the three-prong plug. The green or green and yellow conductor in the cord
is the grounding wire. The green wire in the cord must be the only wire connected to the saw’s grounding system and must never
be attached to an electrically “live” terminal. The saw must be plugged into an appropriate outlet that is properly installed and
grounded in accordance with all codes and ordinances. WARNING: Do not remove or modify the plug installed on the saw.
Check with a qualified electrician if you are in doubt if the outlet is properly grounded. Do not use the saw if the cord or
plug is damaged.
EXTENSION CORDS
The X-390 electric saw requires three wire extension cords only. The cord should have the required three wire receptacle to
accept the saw plug and have a three-prong grounding type plug. As the distance from the supply outlet increases, a heavier
gauge extension cord must be used. Using extension cords with too small a gauge of wire causes a serious drop in voltage
resulting in loss of power and possible saw damage. Refer to the table shown to determine the required wire gauge. The smaller
the gauge number of the wire, the greater the capacity of the cord. For example, a 14 gauge cord can carry a higher amp load than
a 16 gauge cord.
RECOMMENDED MINIMUM WIRE GAUGE
FOR EXTENSION CORDS
120 V 15 A 25’ 50’ 100’ 150’
Minimum Wire Gauge 16 AWG 12 AWG 10 AWG 8 AWG
Volts Amps Cord length in feet
GENERATORS
The minimum generator required to power the X-390 electric saw is 2800 watts continuous with a 120 volt 20 amp outlet
producing 60 hertz single phase power. Generators vary widely so contact your generator distributor or manufacturer for their
recommendation.
4
MACHINE DESCRIPTION
The Soff-Cut International, Inc. Model X-390 electric saw is designed as a residential and light commercial Ultra Early Entry
concrete saw and is one of the smallest and lightest saws in the SoffCut line. The patented Soff-Cut Ultra Early Entry dry cutting
system controls random cracking of concrete through the early timing of the saw cutting usually within one to two hours after the
finishing process is completed. The patented saw and skid plate technology in conjunction with Soff-Cut blades allows for Ultra
Early Entry sawing the same day while minimizing chipping and spalling. The saw is a manual push style with manual controls
for all functions.
Model number and part number – X-390
Materials cut – Green concrete only.
Blade type – 5.0” (127mm) and 5.5” (140mm) dry cut diamond blade with tri-arbor
Blade rotation – Counter clockwise, upcutting
Blade shaft speed – 6850 rpm
Cutting depth – 7/8 to 1 1/18” (22 to 28.5mm) using a 5.5” (140mm) depending on amount of blade wear
Cutting distance from wall – 2” (51mm)
Weight – 30 lbs. (14 kg)
Dimensions – Handle not installed 30”L x 15”W x 11”H (762mmL x 381mmW x 279H)
Blade raise/lower system – Manual by rotating handle
Guide system – Manual front guide with spring return
Handle – Fiberglass with locking pins
Average cutting rate - Estimate only. Speed will vary with job conditions and concrete mixes.
Soft aggregates 10 ft/min (3.0 m/min)
Medium aggregates 6 ft/min (1.8 m/min)
Hard aggregates 3 ft/min (.9 m/min)
Blade applications
Red Excel Series 3000 XL55-3000 Hard aggregate, medium abrasive sand
Yellow Excel Series 5000 XL55-5000 Medium hard to soft aggregate, abrasive sand
Blue Excel Series 7000 XL55-7000 Soft aggregate, highly abrasive sand
Blades are available in 5.5” (140mm) and 5” (127mm) diameters and in .095” (2.4 mm) and .225” (5.7 mm) widths.
ProEdge bevel blades for decorative and hand tooled looks are also available.
Motor specifications
Type Air cooled, universal electric motor with gear reduction
Power 2.4 hp (1800 W)
Voltage 120 volts
Amperage 15 amps
Cycles 60 hertz single phase
5
BLADE AND SKID PLATE INSTALLATION
The Excel Series of diamond blades have been designed specifically for the Soff-Cut Ultra Early Entry dry cutting system of
green concrete. These specialty blades are designed to increase speed and life while cutting a wide range of aggregates. Choose
the correct specification of diamond blade for your area as follows:
Red Excel Series 3000 part no. XL55-3000 Hard aggregate, medium abrasive sand
Yellow Excel Series 5000 part no. XL55-5000 Medium hard to soft aggregate, abrasive sand
Blue Excel Series 7000 part no. XL55-7000 Soft aggregate, highly abrasive sand
With the saw turned off, unplugged from the power source and the safety switch on the handle in the OFF (red) position, push the
box release lever on the left side of the saw forward and raise the front of the box. With the box fully tilted rearward, rotate the
blade by hand while pushing rearward on the arbor lock lever on the right side of the saw. With the blade wrench provided with
the saw, loosen the blade bolt on the arbor by turning counter clockwise. Remove the outer arbor washer or flange.
WARNING: Inspect the blade for any damage. Do not use any blade tha t has cracks, nicks, flaws or a damaged arbor.
Make sure the blade is marked with a maximum operating speed greater than 7000 rpm. Match the blade tri-arbor to the
blade shaft arbor and install the blade firmly against the rear flange. Insure the blade is installed on the tri-arbor correctly. Match
the female tri-arbor of the outer washer or flange with the blade shaft and install the blade shaft bolt turning clockwise while
holding the arbor lock lever. Be sure the outer flange is fully seated and firmly holding the diamond blade in position. Install a
new skid plate by removing the white thumb nuts on the bottom of the saw. Install the skid plate on the studs by applying
pressure on the ends of the skid plate. An alignment pin insures that the plate installs in one direction only. Do not force the skid
plate or apply force in the center of the skid plate as this can bend or warp the skid plate and may cause chipping and raveling of
the cut. Install the white thumb nuts to hold the skid plate. Check that the blade aligns with the skid plate slot. When replacing a
worn blade, thoroughly clean the concrete from the blade block guard assembly and front diverter before installing the new blade.
Discard the old skid plate and replace it with a new skid plate.
Note: The patented skid plate is the most important part of the Soff-Cut Ultra Early Entry system. If
it is bent, twisted or damaged, spalling and raveling of a cut may result. Store skid plates carefully
and install them properly. Install a new skid plate with each new blade. Never reuse skid plates.
Arbor lock lever
Thumb screw Thumb screw
Skid plate Diamond blade
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Arbor washer
Arbor bolt
OPERATING INSTRUCTIONS
Experience is very important when running the X-390 electric saw. A skilled worker is highly recommended. Read all
instructions before using the saw. Always do an inspection of the saw before starting the motor. Check that all controls are in
good working order. Check for loose bolts or nuts. Check the cord for damage. Insure all guards are secure, undamaged and
properly installed. WARNING: Do not operate the saw unless all guards, safety equipment and the motor on/off switch
are in place and operational! Repair or replace any damaged components. Check for proper specific ation of blade and that the
skid plate is installed properly. Check that the blade and skid plate are in good condition. Make sure the work site is clean, well
lit and hazard free.
Install the handles depending on the length needed. For best results, use both handles or 6 feet of length. Attach the extension
cord to the handle with the cord clamps. This will keep the cord away from the saw. Make sure the safety switch on the handle is
in the OFF (red) position. Extend the front guide mechanism with the white wheel and latch into place by sliding it forward on
the hooked latch on top of the blade guard. Plug in the extension cord to the proper electrical source. Check that the cord is not
tangled or caught on anything. Use a minimum generator size of 2800 watts with a 20 amp circuit breaker for 110 volts.
To begin sawing, line up the saw with the cut line using the white wheel on the front guide and the small notch on the back of the
base plate. Turn the safety switch to the ON (green) position. To turn the motor on, rotate the handle clockwise while keeping
the saw aligned with the cut. Rotating the handle fully to the right will turn the motor on. Hold tightly as the saw will move back
toward you slightly when starting to cut. Hold pressure to the right to keep the motor running. Push the saw forward with even
pressure to cut keeping the front guide wheel on the cut line. Push the saw at about half speed for the first 20 feet to allow the
blade to develop good diamond exposure or open up and promote full blade life. Increase the forward speed of the saw until the
depth gauge starts to show red. All red is too fast. Do not force the saw or stall the motor. At the left rear corner of the saw is
and aggregate adjustment knob. This adjustment knob will change the down pressure on the cutting blade in relationship to the
hardness of the aggregate in your area. Simply turn the knob accordingly to the soft, medium or hard setting. By using the proper
aggregate setting in conjunction with the depth gauge, you will obtain optimu m cuttin g speeds. If in doubt, contact your ready
mix supplier to help determine the aggregate hardness. Do not add additional weights to the saw. When approaching a wall or
obstruction, touch the guide wheel against the wall and then back up to release the guide. The guide will rise out of the way to
finish the cut. When the cut is complete, turn the handle quickly counter-clockwise until it stops. The motor will stop, the blade
will raise and pressure will be applied to the rear back up wheel. Push down on the handle until about knee high and roll the saw
off the concrete on the 2 rear wheels. Flip the safety switch to the OFF (red) position to avoid false starting. Always secure the
saw from movement while unattended. Periodically, clean any excess concrete from inside the blade guard and front diverter.
Always clean the blade guard assembly thoroughly before storing the saw. The saw will leave two trails of concrete cuttings.
Lightly sweep the cuttings parallel to the cut with a soft bristle broom. Do not walk on the joints or transport equipment
across the joints until the concrete fully hardens.
Depth gauge
Aggregate adjuster
Hooked guide latch
Box release lever Arbor lock lever
7
MAINTENANCE
The following maintenance should be performed by the saw owner or operator.
• Guards – Check all guards for damage and proper function daily especially the blade guard. The blade guard should be
secure to the saw and not damaged.
• Diamond blade – Inspect diamond blades daily for damage, cracks, secure fit to the arbor, loss of segments, warping or
overheating. If any blade shows any of these problems, discard the blade and never use.
• Skid plate – Inspect the skid plate daily for damage, excessive wear in the blade slot, burrs on the concrete surface side,
twisting and any movement when installed on the saw. Replace the skid plate with each new diamond blade. Never
reuse skid plates or spalling and raveling may result. Periodically, check the skid plate for alignment with the blade.
Insure that the blade does not contact the skid plate and adjust if necessary.
Saw controls – Inspect all controls for proper function daily. Check the motor on/ off switch for proper operation.
•
• Cleaning – Clean the blade guard and bottom plate of any excess concrete build up after each use. Keep the handle
clean and dry. Keep all openings and slots on the saw clean and open so air flows freely through the motor compartment
to insure proper cooling. Use compressed air and blow out the back side of the motor where the air intake slots are
located. Rotate the arbor shaft by hand while cleaning the motor.
• Saw pivot – The saw box should be free to pivot without binding on concrete deposits. Clean and/or replace bearings as
necessary.
Wheels – Wheels should be wiped clean of sealers and concrete deposits. Inspect wheels for damage. Insure wheels roll
•
freely.
Plastic case – Keep plastic case clean as loose material can lodge in motor during transportation.
•
Any other maintenance or repairs should be done by a competent mechanic or by Soff-Cut personnel only.
CAUTION: Certain cleaning agents and solvents damage parts. Some of these are gasoline, carbon tetrachloride, chlorinated
cleaning solvents, ammonia and household detergents that contain ammonia. Avoiding use of these and similar types of cleaning
agents minimizes the probability of damage.
WARNING: Do not modify the saw! Use only Soff-Cut International replacement parts. Use of unauthorized parts may
create a danger or damage the engine.
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SAWING CONTRACTION JOINTS
As concrete hydrates or cures and begins to set, it develops internal stresses which may cause random cracks casting doubt on the
quality and workmanship of the concrete. Joints are saw cut in concrete to relieve these stresses before they seek their own relief
in the form of a random crack. The Soff-Cut Ultra Early Entry system controls random cracking through the early timing of a
saw cut at predetermined locations to create weakened planes in the concrete that subsequently crack at the bottom of the cut to
relieve the stress. Soff-Cut sawed contraction joints should be a minimum of 1/8
(25mm) deep. Contraction joints should be sawn as soon as the concrete will support the weight of the saw and the operator
without marking or damaging the concrete. There are many possibilities for joint layout. Joint layout should be provided by the
project designer, engineer or architect. If the joint layout is not provided, the saw contractor should submit a detailed joint layout
for approval prior to cutting. Several factors affect joint spacing including:
• Concrete thickness
• Type, amount and location of reinforcement
• Shrinkage potential of concrete – cement (type, quantity), aggregate (size, quantity, quality), water to cement
ratio, admixtures, concrete temperature
• Base friction
• Slab restraints
• Layout of foundations, racks, pits, equipment pads, trenches, etc.
• Environmental factors – temperature, wind, humi dit y
• Methods and quality of concrete curing.
Generally, contraction joint patterns should divide slabs into approximate square panels per the recommended spacing shown.
RECOMMENDED CONTRACTION JOINT SPA CING
3.5 (90) 8 (2.4)
4, 4.5 (100, 114) 10 (3.0)
5, 5.5 (125, 140) 12 (3.6)
6 (150) or greater 15 (4.5)
At all intersecting cross cuts, install Soff-Cut joint protectors at each joint to prevent joint damage.
Concrete thickness, in. (mm) Maximum spacing, ft (m)
th
the concrete depth and a minimum of 1”
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TROUBLESHOOTING
MOTOR WILL NOT START
• Check that the saw is plugged in correctly and you have the proper voltage.
• Check that the circuit breaker on the electrical outlet is not tripped.
• Check that the safety switch on the handle is in the ON (green) position.
• Insure that you have rotated the handle clockwise to the farthest position .
• Check that the blade shaft rotates freely and no concrete has built up in the blade block or motor.
• Check that the generator is on and at full throttle.
• Check that the ground fault interrupter on the electrical outlet is not tripped.
• Check that the extension cord is not faulty.
MOTOR RUNS BUT BOGGS DOWN WHEN CUTTING
• Check that the extension cord is the proper wire gauge size for the length used.
• Check that the generator is at least 2800 watts and is at full throttle.
• Check that the diamond blade is the correct specification for the aggregate being cut.
• Check that the diamond blade is not worn out, glazed, warped or damaged.
• Insure that the diamond blade is not being twisted in the cut.
• Check that the diamond blade is not contacting the skip plate when cutting.
• Check that the aggregate adjustment knob is set for the proper aggregate for your area.
• Insure the diamond blade is properly mounted and secured with clean flanges.
SAW IS SPALLING AND RAVELING CUT
• Check to see if diamond blade is worn out, glazed, warped or damaged.
• Insure that the diamond blade moves freely through the skid plate without contact.
• Check skid plate for excessive wear or gap around the diamond blade.
• Check bottom of skid plate for metal burrs or irregularities.
• Insure skid plate is not twisted or bent.
• Do not twist or move the saw sideways while cutting.
• Check that the motor is running properly.
Insure the diamond blade is properly mounted and secured with clean flanges.
•
• Insure that the diamond blade is the correct specification for your area.
• Insure the slab is clean with no debris that could raise the skid plate or saw while cutting.
• Use Soff-Cut joint protectors at all cut intersections.
• Clean excess concrete debris from the blade guard assembly, front diverter, skid plate and bottom plate.
SAW PULLS TO ONE SIDE WHILE SAWING
• Check front guide is properly aligned with the center of the diamond blade.
• Check to see if diamond blade is worn out, glazed, warped or damaged.
• Do not twist or move the saw sideways while cutting. Make gradual changes in pressure on the handlebar to control the
saw in the cut.
• Insure that all wheels roll freely and smoothly.
• Do not force the saw. Allow the diamond blade to cut at its own rate of speed.
• Check the skid plate for damage or burrs.
10
WARRANTY
The SoffCut International electric saw is thoroughly inspected and tested before leaving the factory. It is warranted to be free of
defects from workmanship and materials for a period of 90 days from the date of original purchase or 10 hours, whichever comes
first.
Before work is performed on any related warranty item, you must submit date of purchase and warranty repair estimate to SoffCut
International. This can be done by letter, fax or telephone. SoffCut International will approve the cost or have you ship the unit
back to SoffCut International prepaid for repair. Concerning parts that have failed, you can obtain a Returned Merchandise
Authorization (RMA) number from SoffCut International. Send the parts back to SoffCut International prepaid with proof of
purchase and the RMA number, and one of the following will happen:
1. Your account will be credited
2. The part will be repaired and returned to you
3. The part will be replaced and sent to you.
Note: SoffCut International is not responsible for shipping costs.
THE USE OF ANY OTHER BLADE EXCEPT THE ORIGINAL SOFFCUT BLADE PACKAGE MAY VOID THE
WARRANTY AND COULD CAUSE INTERNAL DAMAGE TO THE MOTOR.
IN NO EVENT SHALL SOFFCUT INTERNATIONAL BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES FROM THE SALE OR USE OF THE PRODUCT. THIS DISCLAIMER APPLIES BOTH
DURING AND AFTER THE TERM OF THIS WARRANTY.
SOFFCUT INTERNATIONAL DISCLAIMS LIABILITY FOR ANY WARRANTIES INCLUDING IMPLIED WARRANTIES
OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE” AFTER THE TERM OF THIS WARRANTY.
This warranty gives you specific legal rights and other possible rights, which may vary from state to state. 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. Some states do not allow limitations on how long an implied warranty lasts so the above limitation may no t apply to you.
If you are unable to obtain warranty service or are dissatisfied with the warranty service you received, contact the owner of the
dealership involved. Normally, this should resolve your problem. For further assistance, call our parts and service department at
1-800-776-3328 or 1-951-272-2330.
Copyright 2008 Soff-Cut International, Inc.
Covered by one or more of the following U.S. Patents
4769201, 4889675, 4928662, 4938201, 5056499, 5086750, 5184597, 5303688, 5305729, 5373834, 5441033, 5505189, 5507273,
5570677, 5575271, 5579754, 5582899, 5603310, 5660161, 5664553, 5666939, 5689072, 58030371, 6892719.
Other U.S. and foreign patents pending.
The above SoffCut International warranty does not apply under the following circumstances:
• Repairs made or attempted by others.
• Repairs required because of normal wear and tear.
• The saw has been abused, misused or improperly maintained
• Alterations have been made to the saw.
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Maximizing the Soff-Cut® System
“The timing of concrete operations – especially finishing and jointing – is critical”, states a quote from the
foreword of the American Concrete Institute (ACI) 302.1R-96. It goes on to say that “Failure to address this issue can
contribute to undesirable characteristics in the wearing surface such as cracking...” (It mentions other problems).
The patented Soff-Cut Ultra Early Entry system has revolutionized the method used to control random cracking.
While Soff-Cut is being specified more today than ever, sometimes the ultra early-entry spec is not always followed
on the job site. When that happens, building owners are not getting what they are paying for or the finished product
they expect.
In order for the Soff-Cut system and an experienced Soff-Cut contractor to do a satisfactory job, four components
must exist to meet the “specification”:
1. A Soff-Cut Ultra Early Entry dry up-cut saw
2. A Soff-Cut dry-cutting diamond blade
3. A Soff-Cut anti-ravel skid plate installed with every new diamond blade
4. An operator skilled in using the Soff-Cut Ultra Early Entry cutting system.
Without this, joints can not be cut early enough to control random cracking before it starts, which is what the building
owner is paying for.
The ACI Spec 302.1R-96 says it best:
“Early-entry dry-cut saws use diamond-impregnated blades and a skid plate that helps prevent spalling.
Timely changing of skid plates is necessary to effectively control spalling. It is best to change skid plates in
accordance with manufacturer’s recommendations…The goal of saw-cutting is to create a weakened
plane as soon as the joint can be cut…The timing of the early-entry process allows joints to be in place prior
to development of significant tensile stresses in the concrete…”
The Portland Cement Association (PCA) engineering bulletin, Concrete Floors on Ground, also states:
“Proper jointing can eliminate unsightly random cracks. Aspects of jointing that lead to a good job are
choosing the correct type of joint for each location, establishing a good joint pattern and layout, and installing
the joint at the correct time…Timing of joint sawing is critical…Lightweight, high-speed, early-cut saws
have been developed to permit joint sawing very soon after floor finishing, sometimes within 0 to 2 hours…if
the cut is sawn within a few hours after final finishing, random cracking can be controlled…”
Soff-Cut has the only Ultra Early Entry dry-cutting system which controls random cracking through the early timing
of the cut. With the patented Soff-Cut method, control joints are usually cut within 0 to 2 hours after the finishing
process. Joint cutting should begin as soon as the concrete will support the weight of the saw and the operator at each
joint location and before final set. If the joints are not being cut within this time frame then the Soff-Cut Ultra Early
Entry method is not being followed and building owners are not getting what they are paying for or the finished
product that they expect.
We hope this information is beneficial to building owners, general contractors, concrete finishers, saw operators and
the entire industry. For additional information, contact Soff-Cut International, Inc. at (951) 272-2330 or (800) 7763328, or see our website
Revised 9/2008
www.soffcut.com.
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