Black & Decker QP350 Instruction Manual

CAT. NO. QP350 FORM NO. 617931-00 Copyright © 2003 Black & Decker (APR-03) Printed in Czechoslovakia
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INSTRUCTION MANUAL
Cat. No. QP350
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PROFESSIONAL GRADE POWER TOOLS
®
VEA EL ESPAÑOL EN LA CONTRAPORTADA.
SAVE THIS MANUAL FOR FUTURE REFERENCE.
INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO Y PÓLIZA DE GARANTÍA. ADVERTENCIA: LÉASE ESTE INSTRUCTIVO ANTES DE USAR EL PRODUCTO.
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IMPORTANT SAFETY INSTRUCTIONS
WARNING: When using electric tools, basic safety precautions
should always be followed to reduce risk of fire, electric shock, and personal injury, including the following:
READ ALL INSTRUCTIONS
DOUBLE INSULATION
Double insulated tools are constructed throughout with two separate layers of electrical insulation or one double thickness of insulation between you and the tool's electrical system. Tools built with this insulation system are not intended to be grounded. As a result, your tool is equipped with a two prong plug which permits you to use extension cords without concern for maintaining a ground connection.
NOTE: Double insulation does not take the place of normal safety precautions when operating this tool. The insulation system is for added protection against injury resulting from a possible electrical insulation failure within the tool.
CAUTION: WHEN SERVICING USE ONLY IDENTICAL
REPLACEMENT PARTS. Repair or replace damaged cords.
POLARIZED PLUGS
Polarized plugs (one blade is wider than the other) are used on equipment to reduce the risk of electric shock. When provided, this plug will fit into a polarized outlet only one way. If the plug does not fit fully into the outlet, reverse the plug. If it still does not fit, contact a qualified electrician to install the proper outlet. Do not change the plug in any way.
IMPORTANT SAFETY INSTRUCTIONS FOR ALL TOOLS
• KEEP WORK AREA CLEAN. Cluttered areas and benches invite injuries.
• CONSIDER WORK AREA ENVIRONMENT. Don't expose power
IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS OR ANY QUANTUM PRO TOOL, CALL US TOLL FREE AT:
1-800-544-6986
TRIGGER
SWITCH
RETRACTING
LEVER
LOWER GUARD
SHOE
QUADRANT KNOB
BEVEL
QUADRANT
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tools to rain. Don't use power tools in damp or wet locations. Keep work area well lit. Do not use tool in presence of flammable liquids or gases.
• GUARD AGAINST ELECTRIC SHOCK. Prevent body contact with grounded surfaces. For example; pipes, radiators, ranges, and refrigerator enclosures.
• KEEP CHILDREN AWAY. Do not let visitors contact tool or extension cord. All visitors should be kept away from work area.
• STORE IDLE TOOLS. When not in use, tools should be stored in dry, and high or locked-up place - out of reach of children.
• DON'T FORCE TOOL. It will do the job better and safer at the rate for which it was intended.
• USE RIGHT TOOL. Don't force small tool or attachment to do the job of a heavy-duty tool. Don't use tool for purpose not intended.
• DRESS PROPERLY. Do not wear loose clothing or jewelry. They can be caught in moving parts. Rubber gloves and non-skid footwear are recommended when working outdoors. Wear protective hair covering to contain long hair.
• USE SAFETY GLASSES. Also use face or dust mask if operation is dusty.
• DON'T ABUSE CORD. Never carry tool by cord or yank it to disconnect from receptacle. Keep cord from heat, oil, and sharp edges.
• SECURE WORK. Use clamps or a vise to hold work. It's safer than using your hand and it frees both hands to operate tool.
• DON'T OVERREACH. Keep proper footing and balance at all times.
• MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for better and safer performance. Follow instructions for lubricating and changing accessories. Inspect tool cords periodically and if damaged, have repaired by authorized service facility. Inspect extension cords periodically and replace if damaged. Keep handles dry, clean, and free from oil and grease.
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• DISCONNECT OR LOCK OFF TOOLS when not in use, before servicing, and when changing accessories, such as blades, bits, cutters.
• REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to see that keys and adjusting wrenches are removed from tool before turning it on.
• AVOID UNINTENTIONAL STARTING. Don't carry tool with finger on switch. Be sure switch is off when plugging in.
• EXTENSION CORDS. Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. The following table shows the correct size to use depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gage. The smaller the gage number, the heavier the cord.
Minimum Gage for Cord Sets
Volts Total Length of Cord in Feet
120V 0-25 26-50 51-100 101-150 240V 0-50 51-100 101-200 201-300
Ampere Rating
More Not more AWG Than Than
0- 6 18 16 16 14 6 - 10 18 16 14 12 10- 12 16 16 14 12 12- 16 14 12 Not Recommended
• OUTDOOR USE EXTENSION CORDS. When operating a power tool outside, use an outdoor extension cord marked “W-A” or “W.” These cords are rated for outdoor use and reduce the risk of electric shock.
• STAY ALERT. Watch what you are doing. Use common sense. Do not operate tool when you are tired.
• CHECK DAMAGED PARTS. Before further use of the tool, a guard or other part that is damaged should be carefully checked
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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 by an authorized service center unless otherwise indicated elsewhere in this instruction manual. Have defective switches replaced by authorized service center. Do not use tool if switch does not turn it on and off.
ADDITIONAL SPECIFIC SAFETY RULES
• Hold tool by its gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the operator.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry products, and
• arsenic and chromium from chemically-treated lumber (CCA). Your risk from these exposures varies, depending on how often you do this type of work. T o reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.
Avoid prolonged contact with dust from power sanding,
sawing, grinding, drilling, and other construction activities. Wear protective clothing and wash exposed areas with soap and water. Allowing dust to get into your mouth, eyes, or lay on the
skin may promote absorption of harmful chemicals.
WARNING: Use of this tool can generate and/or disperse dust, which may cause serious and permanent respiratory or other injury. Always use NIOSH/OSHA approved respiratory protection appropriate for the dust exposure. Direct particles away from face and body.
CAUTION: Wear appropriate hearing protection during use. Under some conditions and duration of use, noise from this product may contribute to hearing loss.
• The label on your tool may include the following symbols.
V..............volts
A..............amperes
Hz............hertz
W ............watts
min ..........minutes
............alternating current
........direct current
no............no load speed
............Class II Construction
…/min......revolutions or reciprocation per minute
............earthing terminal
............safety alert symbol
ADDITIONAL SAFETY INSTRUCTIONS FOR CIRCULAR SAWS
CAUTION: When cutting into walls, floors or wherever live
electrical wires may be encountered, DO NOT TOUCH ANY METAL PARTS OF THE TOOL! Hold the tool only by insulated grasping surfaces to prevent electric shock if you cut in the live wire.
• KEEP GUARDS IN PLACE AND IN WORKING ORDER. Never
wedge or tie lower guard open. Check operation of lower guard before each use. Do not use if lower guard does not close briskly over saw blade. CAUTION: If saw is dropped, lower guard may be bent, restricting full return.
• KEEP BLADES CLEAN AND SHARP. Sharp blades minimize
stalling and kickback.
DANGER: Keep hands away from cutting area. Keep hands away from blades. Do not reach underneath work while blade is rotating.
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Do not attempt to remove cut material when blade is moving.
CAUTION: Blades coast after turn off.
• SUPPORT LARGE PANELS. Large panels must be supported as shown in Figure 16 to minimize the risk of blade pinching and kickback. When cutting operation requires the resting of the saw on the work piece, the saw shall be rested on the larger portion and the smaller piece cut off.
• USE RIP FENCE. Always use a rip fence or straight edge guide when ripping.
• GUARD AGAINST KICKBACK. Kickback occurs when the saw stalls rapidly and is driven back towards the operator. Release switch immediately if blade binds or saw stalls. Keep blades sharp. Support large panels as shown in Figure 16. Use fence or straight edge guide when ripping. Don’t force tool. Stay alert­exercise control. Don’t remove saw from work during a cut while the blade is moving.
• LOWER GUARD. Raise lower guard with the retracting handle.
• ADJUSTMENTS. Before cutting be sure depth and bevel adjustments are tight.
• USE ONLY CORRECT BLADES IN MOUNTING. Do not use blades with incorrect size holes. Never use defective or incorrect blade washers or bolts.
• AVOID CUTTING NAILS. Inspect for and remove all nails from lumber before cutting.
SA VE THESE INSTRUCTIONS
Motor
Be sure your power supply agrees with nameplate marking. 120 Volts AC only means your tool will operate on standard 60 Hz household power. Do not operate AC tools on DC. A rating of 120 volts AC/DC means that you tool will operate on standard 60 Hz AC
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or DC power. This information is printed on the nameplate. Lower voltage will cause loss of power and can result in over-heating. All Black & Decker tools are factory-tested; if this tool does not operate, check the power supply.
Brushes
DISCONNECT PLUG FROM POWER SUPPLY BEFORE SERVICING
Inspect carbon brushes regularly by unplugging tool, removing the Brush Inspection Cap (Fig. 2) and withdrawing the brush assembly. Keep brushes clean and sliding freely in their guides. Always replace a used brush in the same orientation in the holder as it was prior to removal. Carbon brushes have varying symbols stamped into their sides, and if the brush is worn down to the line closest to the spring, they must be replaced. Use only identical brushes. Always replace both brushes. Use of the correct grade of brush is essential for proper operation. New brush assemblies are available at your authorized service center. The tool should be allowed to “run in” (run at no load without a blade) for 10 minutes before use to seat new brushes. While “running in” DO NOT TIE, TAPE, OR OTHERWISE LOCK THE TRIGGER SWITCH ON. HOLD BY HAND ONLY.
Adjustments and Setup
ATTACHING AND REMOVING BLADES
DISCONNECT PLUG FROM POWER SUPPLY. To attach the blade, retract lower blade guard and place inner
clamp washer and blade on saw spindle with printed side of blade out (teeth at bottom of blade pointing forward) (FIG. 1.) Place outer clamp washer on saw spindle. The larger surfaces of both washers must face the blade. Thread on blade clamping screw firmly by hand to hold both blade washers in position. Lightly depress the blade lock (FIG. 2) while turning the spindle until the blade stops rotating. Tighten blade clamping screw
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(clockwise) firmly with the blade wrench (FIG. 3). NEVER ENGAGE BLADE LOCK WHILE SAW IS RUNNING, OR ENGAGE IN AN EFFORT TO STOP THE TOOL. NEVER TURN SWITCH ON WHEN BLADE LOCK IS ENGAGED. SERIOUS DAMAGE TO YOUR SAW WILL RESULT. When removing the blade, first unplug the saw. Engage the blade lock and unscrew the blade clamping screw by turning it counter­clockwise with the blade wrench.
CUTTING DEPTH ADJUSTMENT
DISCONNECT PLUG FROM POWER SUPPLY. Hold the saw firmly as shown in Figure 4. Loosen
(counterclockwise) the Depth Adjustment Lever and move shoe to obtain the desired depth of cut, as shown in Figure 5. Make sure the Depth Adjustment Lever has been retightened (clockwise) before operating saw. Your saw is equipped with a carbide tipped saw blade for long life and efficient cutting. For the most efficient cutting action using a carbide tipped saw blade, set the depth adjustment so that about one half of a tooth projects below the surface of the wood to be cut. The height of a whole tooth is the distance from the tip of the tooth to the bottom of the gullet in front of it. Study Figures 5A and 5B to determine what one half tooth means. (5A shows one half tooth projecting below the surface and figure 5B shows a whole tooth projecting below the surface.) Setting the saw at the proper cutting depth keeps blade friction to a minimum, removes sawdust from between the blade teeth, results in cooler, faster sawing and reduces the chance of kickback.
A method of checking for the correct cutting depth is shown in Figure
6. Lay a piece of the material you plan to cut along the side of the blade, as shown in the figure, and observe how much tooth projects beyond the material. NOTE: When using a non carbide tipped blade, make an exception
to the above procedure and allow a full tooth to project below the material, as shown in Figure 5B.
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FIG. 1
INNER
CLAMP
WASHER
OUTER CLAMP
WASHER
BLADE CLAMPING SCREW
RETRACTING
LEVER
BLADE
LOCK
BRUSH
INSPECTION
CAP
FIG. 2
FIG. 3
TIGHTEN
LOOSEN
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FIG. 4
DEPTH
ADJUSTMENT
LEVER
FIG. 5
FIG. 6
GULLETSURFACE
OF WOOD
FIG. 7
RIP FENCE
TIP OF TOOTH
TIP OF TOOTH
FIG. 5A
FIG. 5B
GULLET
SURFACE
OF WOOD
BEVEL ANGLE ADJUSTMENT
DISCONNECT THE SAW FROM THE POWER SUPPLY. The full range of the Bevel Adjustment is from 0 TO 50 DEGREES.
The quadrant is graduated in increments of 5 degrees. On the front of the saw is a bevel angle adjustment mechanism
(Figure 8) consisting of a calibrated quadrant and a lever or knob. T o set the saw for a bevel cut, loosen (counterclockwise) the quadrant knob and tilt shoe to the desired angle by aligning the pointer with the desired angle mark. Retighten knob firmly (clockwise).
NOTE: The quadrant pointer, located between the quadrant knob and the quadrant, can be adjusted after loosening its screw. Retighten firmly after adjustment.
KERF INDICATOR
The front of the saw shoe has a kerf indicator (Figure 8) for vertical and bevel cutting. This indicator enables you to guide the saw along cutting lines penciled on the material being cut. The indicator lines up with the left (inner) side of the saw blade, which makes the slot or “kerf” cut by the moving blade fall to the right of the indicator. Guide along the penciled cutting line so that the kerf falls into the waste or surplus material – See Figure 9. Figure 9 shows the dimensions of the shoe. The right dimension is 1-1/2” (standard 2x lumber).
SHOE ALIGNMENT
Your saw has been set at the factory for accurate vertical cuts (a 90 degree angle between the bottom of the shoe and the blade). The edge of the shoe has also been set parallel to the blade so that it will not bind when using an edge guide. If the saw should ever need adjustment, it may be done as follows:
ADJUSTING FOR 90° CUTS
1. DISCONNECT PLUG FROM POWER SUPPLY.
2. Adjust the saw to 0° bevel.
3. Place saw on blade side (Fig. 10). Retract blade guard.
4. Loosen quadrant lever or knob (Fig. 10). Place a square against the blade and shoe to adjust the 90° setting.
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FIG. 12
SCREWS
FIG. 13
FIG. 14
LOCK
NUT
LOCK
RING
LEVER
TIGHTEN
LOOSEN
45
30
2
2
.
5
15
0
FIG. 11
SCREWS
QUADRANT
KNOB
ADJUSTMENT SCREW
FIG. 8
QUADRANT
KERF
INDICATOR
FIG. 9
GUIDE ALONG PENCILED
CUTTING LINE SO KERF FALLS IN WASTE STOCK
DIRECTION OF CUT
KERF
QUADRANT
KNOB
WASTE OR
SURPLUS STOCK
Align left side of
saw blade
with“45” mark, as
shown, for 45°
bevel cutting
5 "
1-1/2"
Align left side of
saw blade with
“0” mark for
straight cutting
QUADRANT KNOB
FIG. 10
DESIRED WIDTH
OF STOCK
CORD
KEEPER
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5. Loosen the hex nut and move the adjustment screw so that the shoe will stop at the proper angle as shown in Figure 11. Lock the screw in place by tightening the hex nut.
6. It may be necessary to adjust the quadrant angle pointer to line up on “O” after shoe has been adjusted.
ADJUSTING THE SHOE PARALLEL TO THE BLADE
(Your saw is adjusted at the factory so that the blade and shoe are parallel. If these parts become misaligned, adjust as follows.)
1. Disconnect plug from power supply.
2. Loosen the (2) screws at the adjusting bracket at the rear of the shoe, as shown in Figure 12.
3. Adjust the shoe until it is parallel to the blade by measuring from the edge of the shoe to the blade, front & rear. You can measure from the outside edge of the blade to the shoe as shown in Figure 12 or from the inner edge of the blade to the wider part of the shoe. (Do not measure from the tips of any saw blade teeth.)
4. When shoe is parallel, tighten all screws.
ADJUSTING DEPTH ADJUSTMENT LEVER
It may be desirable to adjust the Depth Adjustment. (It will sometimes hit the shoe before tightening or loosening completely.)
To adjust lever, follow the steps below.
1. Disconnect plug from power supply.
2. Using a small screwdriver, pry the lock ring off, as shown in
Figure 13.
3. Remove the lever and rotate it in the desired direction about 1/8
revolution. (More or less as necessary.)
4. Reinstall the lever and insert the lock ring with concave side
against lever to hold it in place. (Figure 14)
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FIG. 15
FIG. 16
SUPPORT WORK
NEAR CUT
FIG. 17
WRONG -
MATERIAL BENDS ON
BLADE CAUSING HEAVY
LOADS OR KICKBACK.
RIGHT
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support cantilevered and overhanging material. Use caution when sawing material from below.
Be sure saw is up to full speed before blade contacts material to be cut. Starting saw with blade against material to be cut or pushed forward into kerf can result in kickback.
Push the saw forward at a speed which allows the blade to cut without laboring. Hardness and toughness can vary even in the same piece of material, and knotty or damp sections can put a heavy load on the saw. When this happens, push the saw more slowly, but hard enough to keep it working without much decrease in speed.
Forcing the saw can cause rough cuts, inaccuracy, kickback and over-heating of the motor. Should your cut begin to go off the line, don’t try to force it back on. Release the switch and allow blade to come to a complete stop. Then you can withdraw the saw, sight anew, and start a new cut slightly inside the wrong one. In any event, withdraw the saw if you must shift the cut. Forcing a correction inside the cut can stall the saw and lead to kickback. IF SAW STALLS, RELEASE THE
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Operation
SWITCH
Pull the trigger switch to turn the motor “ON”. Releasing the trigger turns the motor “OFF”. This tool has no provision to lock the switch in the “ON” position, and should never be locked “ON” in any way.
WORKPIECE SUPPORT
Figure 15 shows proper sawing position. Note that hands are kept away from cutting area, and power cord is positioned clear of the cutting area so that it will not get caught or hung up on the work.
To avoid kickback, DO support board or panel NEAR the cut, (Figure 16). DON’T support board or panel away from the cut (Figure 17).
When operating the saw, keep the cord away from the cutting area and prevent it from becoming hung up on the work piece. Note that a special Cord Keeper has been provided on the tool’s handle. (See Fig. 10 on page 6.) Press the cord firmly into the cord keeper to keep it out of the way but in sight so you know where it is at all times.
WARNING: It is important to support the work properly and to hold the saw firmly to prevent loss of control which could cause personal injury; Figure 18 illustrates typical hand support of the saw.
ALWAYS DISCONNECT SA W BEFORE MAKING ANY ADJUSTMENTS! Place the work with its “good” side – the one on which appearance is most important – down. The saw cuts upward, so any splintering will be on the work face that is up when you saw it.
CUTTING
Support the work so that the cut will be on your right. Place the wider portion of the saw shoe on that part of the work piece which is solidly supported, not on the section that will fall off when the cut is made. As examples, Figure 18 illustrates the RIGHT way to cut off the end of a board, and Figure 19 the WRONG way. Always clamp work. Don’t try to hold short pieces by hand! Remember to
FIG. 18 FIG. 19
WRONG
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TRIGGER AND BACK THE SAW UNTIL IT IS LOOSE. BE SURE BLADE IS STRAIGHT IN THE CUT AND CLEAR OF THE EDGE BEFORE RESTARTING. As you finish a cut, release the trigger and allow the blade to stop before lifting the saw from the work. As you lift the saw, the spring-tensioned telescoping guard will automatically close under the blade. Remember the blade is exposed until this occurs, never reach under the work for any reason whatsoever. When you have to retract the telescoping guard manually (as is necessary for starting pocket cuts) always use the retracting lever. NOTE: When cutting thin strips, be careful to ensure that small cutoff pieces don’t hang up on inside of lower guard. When ripping (cutting with the grain) the use of a rip fence is recommended. (See Figure 7)
POCKET CUTTING
DISCONNECT PLUG FROM POWER SUPPLY WHEN MAKING THIS OR ANY OTHER ADJUSTMENT. Adjust saw shoe so blade cuts at desired depth. Tilt saw forward and rest front of the shoe on material to be cut. Using the retracting lever, retract blade guard to an upward position. Lower rear of shoe until blade teeth almost touch cutting line. Now release the blade guard (its contact with the work will keep it in position to open freely as you start the cut) (Figure 20). Start the motor and gradually lower the saw until its shoe rests flat on the material to be cut. Advance saw along the cutting line until cut is completed. Release trigger and allow blade to stop completely before withdrawing the blade from the material. When starting each new cut, repeat as above. Never tie the blade guard in a raised position.
Kickback
When the saw blade becomes pinched or twisted in the cut, kickback can occur. The saw is thrust rapidly back toward the operator . When the blade is pinched or bound tightly by the kerf closing down, the blade stalls and the motor reaction drives the unit backward. When the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade can dig into the top surface of the wood causing the blade to climb out of the kerf and jump back toward the operator. Kickback is more likely to occur when any of the following conditions exist.
1. IMPROPER WORKPIECE SUPPORT
A. Sagging or improper lifting of the cut off piece causing
pinching of the blade.
B. Cutting through material supported at the outer ends only
(see Figure 17). As the material weakens it sags, closing down the kerf and pinching the blade.
C. Cutting off a cantilevered or overhanging piece of material
from the bottom up in a vertical direction. The falling cut off piece can pinch the blade.
D. Cutting off long narrow strips (as in ripping). The cut off strip
can sag or twist closing the kerf and pinching the blade.
E. Snagging the lower guard on a surface below the material
being cut momentarily reducing operator control. The saw can lift partially out of the cut increasing the chance of blade twist.
2. IMPROPER DEPTH OF CUT SETTING ON SAW
Using the saw with an excessive depth of cut setting increases loading on the unit and susceptibility to twisting of the blade in the kerf. It also increases the surface area of the blade avaliable for pinching under conditions of kerf close down.
3. BLADE TWISTING (MISALIGNMENT IN CUT)
A. Pushing harder to cut through a knot, a nail, or a hard grain
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FIG. 20
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