8623159
Metal Shrinker and Stretcher
V 4.0
First, make a cardboard template, tracing around the headlight opening. The
flanged section went into the shrinker/stretcher shrinking jaws. By
pressing firmly on the handle and moving the metal back and forth, the
jaws’ teeth keep drawing the metal closer and closer, creating a smooth
curve. Keep checking the new piece with the cardboard template, and
within minutes a piece very close to the correct is created.
With some final adjustments on the car, it fits just fine. It took a total of 15
minutes to create this mounting flange.
Compound curves can be made by working the piece on alternating sides.
Both shrinker and stretcher can take care to match work on both sides.
This technique is especially useful when reproducing splash aprons and
other large curved areas.
OPERATION
1. Before fabricating on the shrinker/stretcher, bend the metal to be formed
90
°
on a sheet metal brake, creating a maximum flange depth that is no
greater than 8 in. (205mm).
2. Make a template out of cardboard or a short piece of wire. A template is
critical to achieve a good fit with minimal filler use.
3. Work the leading edge first. This breaks down the maximum resistance
and permits easy and accurate working afterwards.
4. For the best results and maximum forming power, insert metal only
halfway into the jaws.
5. The bunching or pocketing that typically occurs when shrinking can be
quickly hammered out.
6. Control the pressure exerted on the handle while forming the metal.
7. Move the metal back and forth until the desired radius is obtained.
8. The jaws of the tools are “toothed” to better grip the metal. These teeth
leave slight markings, depending on the hardness of the metal, which can
be removed with an abrasive cloth or wheel.
6
For technical questions call 1-800-665-8685
