Clarke METALWORKER CMSSCS Manuale utente
USER INSTRUCTIONS
ORIGINAL INSTRUCTIONS GC06/23-Rev 1
METAL SHRINKER/STRETCHER SET
MODEL NO: CMSSCS
PART NO: 7610950
2
INTRODUCTION
Thank you for purchasing this CLARKE product.
The CMSSCS Metal Stretcher/Shrinker Set is a handy pair of tools for sheet
metal fabricators who need custom, curve shaped metal straps, trim and
flanges for auto body repair and general sheet metalwork.
Before attempting to use this product, please read this manual thoroughly and
follow the instructions carefully. In doing so you will ensure the safety of yourself
and that of others around you and you can look forward to your purchase
giving you long and satisfactory service.
INVENTORY
A) Shrinker Body c/w Dies
B) Stretcher Body c/w Dies
C) Levers
SPECIFICATIONS
Max thickness-aluminium
.......................16Ga/1.5mm
Max thickness-mild steel
........................18Ga/1.2mm
Max thickness-Stainless Steel
.......................20Ga/1.0mm
Mounting bolt hole size- 3/8”(x2)
SAFETY PRECAUTIONS
To protect against injury observe the following precautions when using this
product. Clarke International is not responsible for misuse of the equipment.
• ALWAYS secure the tool in a bench vice before use.
• ALWAYS keep the work area free of obstructions.
• NEVER try to bend material other than hot-rolled mild steel.
• NEVER modify the tool or use a handle extension arm other than the
one provided.
WARNING: THE USER MUST FOLLOW ALL INSTRUCTIONS WITHIN THIS
INSTRUCTION BOOKLET
3
ASSEMBLY
The shrinker/stretcher set
just requires final assembly
by installing one lever into
each tool body and
securing with the pre-
installed M5 setscrews.
Tools required;
Hex wrench 3mm
MOUNTING
The shrinker and stretcher are portable and can be clamped in a vice for use.
However, to take full advantage of the set and to get 360oaccess to your
workpiece, you can mount these tools to a stand intended for a bench
grinder. To prevent tipping, be sure to fasten the stand to the floor.
MOUNTING THE SHRINKER AND STRETCHER
1. Clean and lubricate shrinker and stretcher as outlined in SETUP.
2. Determine where you want to mount the tools.
3. At the mounting location, center punch two points 2½" apart, and drill two
⅜" diameter holes at these locations.
4. Secure the shrinker/stretcher to your workbench or grinder stand with two
bolts or cap screws of appropriate length to ensure that the fasteners
thread into the casting at least ½".
SETUP
1. Raise the handle, loosen the knob
bolts and unclip die retainer from
the pressure arm. Slide the die
assembly away from the casting
(see Figure 3).
2. Grasp the die retainer clip and
pull the upper jaw from the die
housing.
4
NOTE: Be careful not to lose any springs.
3. Lay out the die components as
shown in Fig 4.
4. Clean grease, metal shavings,
and debris off the tool and dies,
then lightly oil.
NOTE: Never use a wire wheel,
buffer, sand blaster, or
sandpaper on jaw teeth.
otherwise, tooth damage
may occur. It is better to let
the jaws soak in mineral spirits overnight, and then use a wire
brush or a fine dental pick to remove debris.
Figure 4 shows die and jaw assembly order.
5. Use Figures 4-5 as a guide to
arrange the die parts in the
correct order and reassemble.
6. The shrinker/stretchers are ready
for operation.
OPERATION
The Shrinker/Stretcher set is designed to create long, compound-curved metal
pieces out of a single strip of metal without multiple splice points.
Operation consists of inserting a
piece of metal in the tool and pulling
down on the lever to compress or
expand the metal at various points
along the length of the metal strip,
creating the bend or shape needed.
During the bending process, as you
work along the strip of metal, the
clamping pressure exerted by the
lever can be adjusted to create
curves with a nice smooth arch.
5
The lever stop bolt (see Figure 6) can be adjusted with a 3mm wrench to allow
the clamping lever to stop at the same location each time the lever is pulled
down.
NOTE: If the metal splits during the shrinking/stretching procedure, it is
typically because too much bend is trying to be achieved with
just a few heavy pulls of the lever. To avoid splitting, make pulls
lighter and increase number of pulls on lever. If metal still splits,
the radius of the desired bend may be too small for the metal, or
the metal is of the wrong type.
USING THE SHRINKER/STRETCHER
1. Verify the jaw teeth are free of
debris.
2. Determine your job
requirements:
Using the shrinker, a curve in the
metal is created by compressing
the inside radius of a curve (see
Figure 7).
NOTE: Shrinking/stretching will create small teeth marks from the jaws
and cannot be avoided. Limit the depth of any teeth marks by
making more, lighter pulls with the lever.
CAUTION: WHEN THE TOOLS ARE NOT IN USE OR WILL BE PLACED IN STORAGE FOR
A PERIOD OF TIME, WE HIGHLY RECOMMEND REMOVING THE DIES FROM THE
TOOLS. IF THE LEVER IS ACCIDENTLY USED AND THE DIE JAWS CLAMP DOWN
AGAINST ONE ANOTHER INSTEAD OF A WORKPIECE, THE GRIPPING JAW TEETH
MAY BE DAMAGED.
6
COMPONENT PARTS
ITEM DESCRIPTION ITEM DESCRIPTION
1Stretcher body 18 Lower V-block(Shrinker)
2Fulcrum arm pin 19 Upper jaw (Left-Shrinker)
3External circlip 10mm 20 Lower jaw (Left-Shrinker)
4External circlip 12mm 21 Retainer clip (shrinker)
5Finger bolt M5 22 Die retainer (shrinker)
6Pressure arm pin 23 Shrinker body
7Rivet 24 Cross head screw M4 x 12
8Pressure arm 25 Upper V-block (stretcher)
9Extension spring 26 Upper jaw (Right - stretcher)
10 Bolt M8 x 35 27 Cross head screw M4 x 30
11 Set-screw M5 x 8 28 Lower jaw (Right - stretcher)
12 Fulcrum arm 29 Lower jaw (Left - stretcher)
13 Lever 30 Lower V-block (stretcher)
14 Upper V-block (shrinker) 31 Die retainer (stretcher)
15 Compression spring 32 Retainer clip (Stretcher)
16 Upper jaw (right-shrinker) 33 Upper jaw (Left - stretcher)
17 Lower jaw (right-shrinker) 34 Flat washer 4mm
7
COMPONENT PARTS
GUARANTEE
This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required as proof of purchase.
This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for the purpose for which it was
intended.
Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission.
This guarantee does not effect your statutory rights.
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1
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