Eastwood 21489 User manual

DEEP JAW
SHRINKER STRETCHER
INSTRUCTIONS
Item #21489

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The EASTWOOD ELITE DEEP JAW SHRINKER STRETCHER is designed for heavy-duty commercial use and features an extra-deep, 7” throat depth and wider
jaws to allow working larger pieces and panels.
INCLUDES
(1) Body (with Shrinker Jaws installed) [A]
(1) Upper Stretcher Jaw [B]
(1) Lower Stretcher Jaw [C]
(1) Handle [D]
A
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SPECIFICATIONS
Maximum Throat Depth: 7”
Maximum Workable Panel Width/Diameter: 14”
Maximum Workable Material Thickness
Mild Carbon Steel: 16 Gauge
Aluminum: 16 Gauge
Stainless: 20 Gauge
Minimum Shrinking Radius: 3” (for mild carbon steel only, aluminum, high carbon steel and stainless will be greater)
DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE is used to address practices not related to personal injury.
SAFETY INFORMATION
The following explanations are displayed in this manual, on the labeling, and on all other information provided with this product:
B
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C
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D
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READ INSTRUCTIONS
• Thoroughly read and understand this manual before using.
• Save for future reference.
INJURY HAZARD!
• This tool has leveraged rotating components that generate greatly amplified crushing and bending forces which can quickly cause
severe injury! Keep fingers and hands away from moving parts when operating.
• Tremendous external torque loads are placed on this Shrinker Stretcher during operation. This tool cannot be operated without
adequate support or severe personal injury or property damage can occur if it should suddenly be become dislodged or moves
while in use. Before beginning ANY work with this tool, it is absolutely necessary that it be securely bolted to a solid work surface.
• Strenuous physical force may need to be applied to the Shrinker Stretcher during use. Failure to ensure proper footing can quickly
result in a fall which could inflict serious personal injury or property damage. Always work in a clean, uncluttered environment.
• Be sure there is sufficient working room around the tool to allow for safe handling of various sizes of metal.
• The Shrinker Stretcher is equipped with a Handle of the proper length to provide adequate bending force. DO NOT add pipe, bars or any
other devices which would add additional length to the Handle to increase bending force. This will exceed the design limits of the tool
and can result in serious injury and/or component failure.
• Tremendous external torque loads are placed on this Shrinker Stretcher during operation. This tool cannot be operated without
adequate support or severe personal injury or property damage can occur if it should suddenly be become dislodged or moves while
in use. Before beginning ANY work with this tool, it is absolutely necessary that it be securely bolted to a solid, level, well supported
surface capable of withstanding the tremendous torque and side loads this tool is subjected to during use.
CUT HAZARD!
• Handling sharp metal can cause serious cuts. Wear thick, well-fitting work gloves to prevent cuts from handling sharp metal.
EYE INJURY HAZARD!
• Pieces of mill scale, rust and other debris may be ejected from the workpiece during operation. Wear ANSI approved eye protection
while operating.
• The Shrinker Stretcher consists of heavy metal components which can present a hand/finger pinch hazard and cause potentially
serious injuries if dropped on feet. Avoid pinching hands while handling parts during assembly and wear thick, well-fitting work
gloves to prevent cuts from handling sharp metal. The use of safety shoes is strongly recommended.
• Excessive resistance while operating could indicate a defect with the workpiece material or broken or damaged Shrinker Stretcher
components. To avoid injury, stop work immediately and inspect workpiece material for nicks, dents, welds, excessive scale or
remaining coatings. Clean or repair as necessary or discard and begin with a new piece. Also inspect Shrinker Stretcher
components for looseness or damage.

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FIG. 1
SET-UP
• The optionally available Eastwood Elite Deep Jaw Shrinker Stretcher
Stand (#21491) is strongly suggested for mounting the Shrinker
Stretcher. See Eastwood Elite Deep Jaw Shrinker Stretcher Stand
instruction manual for stand mounting.
• As an alternative, a sturdy, well anchored workbench with a mini-
mum 3/16” steel or 3/4” of a solid wood surface is recommended.
• Select a clean, level work surface with clear access to Handle and
sufficient room to manipulate workpieces through the Jaws.
• With the (2) outer-most threaded holes in the base (FIG 1) as
a guide, mark the locations and centers on a piece of paper
with a pencil.
• Transfer the hole locations, then drill (2) 1/2” [12mm] mounting
holes in work surface. NOTE: A minimum thickness of 3/16” steel
or 3/4” of a solid wood surface is strongly recommended.
• Use (2) M10 x 40mm bolts (not included) and washers to secure
base to work surface.
NOTE: Center hole enables the use of mounting holes drilled for
Eastwood #51088 Shrinker/Stretchers.
ASSEMBLY
• Place Handle [D] into bore in Fulcrum Lever (FIG 2) so that the
annular groove is positioned under the Set Screw.
• Using a 3mm Hex Key (not included) tighten Set Screw in
Fulcrum Lever to retain Handle (FIG 3).
SWITCHING JAWS
• The Upper and Lower Shrinker and Stretcher Jaws are retained
by (4) Socket Head Cap Screws and washers each.
FIG. 2
FIG. 3
M10
Mounting Holes
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REMOVING JAWS
• Loosen (do not remove) Upper Jaw Cap Screws (2 per side) with
a 4mm Hex Key (not included) (FIG 4).
• Pull Upper Jaws away from Body and slide Wire Bail off the
Actuating Bar (FIG 5).
• Loosen Lower Jaw Cap Screws (do not remove) (2 per side) with
a 4mm Hex Key (not included).
• Pull Upper Jaws away from Body [A] (FIG 6).
ATTACHING JAWS
• Slide Lower Jaws onto Body with screw slots located under
Cap Screws and Washers.
• Tighten Lower Jaw Cap Screws with a 4mm Hex Key (not included).
• Slide Upper Jaws onto Body with screw slots located under Cap
Screws and Washers.
• Place Wire Bail over top of Actuating Bar.
• Tighten Upper Jaw Cap Screws with a 4mm Hex Key (not included).
FIG. 4
FIG. 5
FIG. 6

• Before fabricating with the Shrinker Stretcher, pre-bend the metal to be
formed to a 90˚ angle along its length on a sheet metal brake (The #14042
Eastwood Versa Bend 20 Inch Offset Sheet Metal Brake works well), creating
a maximum flange depth that is no greater than 7” (FIG 7).
• Make a template of the piece to be formed out of medium bodied cardboard
or manila folder material. Tracing the outline of the piece you want to form is
critical to achieving a good fit with minimal filler use.
• Work the leading edge of the metal piece first. This “breaks down” the maxi-
mum resistance and permits easy and accurate working thereafter (FIG 8).
• Always work the piece a little at a time moving the piece through the Jaws
along its entire planned length so that each area is exposed to the Jaws nu-
merous times rather than trying to shrink or stretch “all in one bite” (FIG 9).
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FIG. 7
FIG. 8
FIG. 9
Tremendous external torque loads are placed on this Shrinker
Stretcher during operation. This tool cannot be operated with-
out adequate support or severe personal injury or property
damage can occur if it should suddenly be become dislodged
or moves while in use. Before beginning ANY work with this
tool, it is absolutely necessary that it be securely bolted to a
properly anchored heavy, sturdy, workbench or stand.
The Shrinker Stretcher exerts tremendous bending and
crushing forces in operation which can present a hand/finger
pinch hazard and cause potentially serious injuries. Avoid
moving parts while operating and wear thick, well-fitting
work gloves to prevent cuts from handling sharp metal. The
use of safety shoes is strongly recommended.
INJURY HAZARD!
The Shrinker Stretcher is equipped with a Handle of the
proper length to provide adequate bending force. DO NOT add
pipe, bars or any other devices which would add additional
length to the Handle to increase bending force. This will
exceed the design limits of the tool and can result in severe
injury and/or component failure.
Workpiece material should be clean of any rust, burrs, nicks,
welds or coatings before attempting to bend or interference
and binding may occur.
OPERATION

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FIG. 10
• The “bunching” or “pocketing” that typically occurs when shrinking can
be quickly hammered out, or smoothed by inserting the metal deeper into
the jaws.
• Maximum control is achieved with the pressure exerted on the handle and
number of strokes used while forming the metal. Move the metal back and
forth along its length until the desired radius is obtained (FIG 10).
NOTE: The Shrinker and the Stretcher Jaws are “toothed” to allow them to
grip and “push” or “pull” the metal. These teeth leave slight markings which,
depending on the hardness of the metal, can be removed with an abrasive
cloth or wheel.
NOTE: At this point, the basic operating instructions have been described
and practice using the Shrinker Stretcher on scrap material is highly recom-
mended. As with many metal working tools, a period of “trial and error” is
needed to achieve a degree of proficiency in their use. Remember, a little
time and material wasted at this step will avoid disappointing results on an
actual project.
STORAGE
• Remove Handle for safety.
• Apply a thin film of light oil or rust-preventive to all bare steel areas.
• Store in a clean, dust-free, dry, dampness free area preferably covered with plastic sheeting.
MAINTENANCE
Maintenance should be performed before each use.
• Clean dirt and debris from Jaw Gripping Teeth. NOTE: Forming aluminum will cause a buildup of aluminum in Gripping Teeth.
They must be cleaned with a wire brush periodically when working with aluminum.
• Check tightness of all hardware.
• Check operation for binding. Lubricate sliding parts and pivot points periodically with medium bodied oil.
NOTE: Use care to avoid getting oil on Jaw Gripping Teeth.
For best results and maximum forming power, insert metal
only halfway into the Jaws.

© Copyright 2017 Easthill Group, Inc. 8/17 Instruction Item #21489Q Rev. 1
If you have any questions about the use of this product, please contact
The Eastwood Technical Assistance Service Department: 800.343.9353 >> email: [e-mail]
PDF version of this manual is available online >> eastwood.com/21489manual
The Eastwood Company 263 Shoemaker Road, Pottstown, PA 19464, USA
US and Canada: 800.343.9353 Outside US: 610.718.8335
Fax: [phone] eastwood.com
OPTIONAL ITEMS
#21491 Eastwood Elite Deep Jaw Shrinker Stretcher Stand
#13475 Eastwood Electric Metal Shears
#11797 Throatless Shear
#14042 Versa Bend Sheet Metal Brake
#20254 Eastwood 24” Slip Roll