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5
OPERATION
1.
Before fabricating on 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 2-3/4”
(FIG 2)
.
2.
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.
3.
Work the leading edge of the metal piece first. This “breaks down” the maximum
resistance and permits easy and accurate working thereafter
(FIG 2)
.
4.
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 numerous times rather
than trying to shrink or stretch “all in one bite”
(FIG 3)
.
5.
For best results and maximum forming power, insert metal only halfway into the Jaws.
The “bunching” or “pocketing” that typically occurs when shrinking can be quickly
hammered out, or smoothed by inserting the metal deeper into the jaws.
6.
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.
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.
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 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 heavy, sturdy, anchored
workbench.
The Eastwood 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.
The Eastwood Shrinker Stretcher was specifically designed to be operated by one person only. Never have one person operate
the Handle while another handles the material workpiece or serious injury could occur.
Workpiece material should be clean of any rust, burrs, nicks, welds or coatings before attempting to bend or interference
and binding may occur.
Apply a minimal amount of a light lubricant to material and jaw surfaces to ease bending process. Do not over lubricate.
FIG. 2
FIG. 3
