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FUNCTION
This machine is composed of the body part and the jaws part. The body is high quality steel
casting, with a high structural strength, good stability and deep throat depth, it is much better for
machining wide sheet material. The jaws are hardening treated chromium steel with very high
hardness and strength.
The jaws including Shrinker and Stretcher, The Shrinker forms outside radius curves and the
Stretcher forms inside radius curves. Compound curves can be made by working the piece on
alternating sides, when both Shrinker and Stretcher, taking care to match work on both sides.
OPERATION
WARNING:
the jaws. The jaws may chip or break causing injury from flying objects.
CAUTION:
footwear, and leather gloves to protect from burrs and sharp edges.
Keep hands and fingers clear of the dies.
When handling large heavy sheets make sure they are properly supported.
The function of this tool is to shrink or stretch sheet metal up to 16ga. (1.5mm) with radius down
to 1" (25.4mm)
The principal operation is made when the sheet work piece is placed between the jaws and then
applying and releasing force with the foot on the foot pedal. The work piece is moved as
required each time the foot pedal is released. By moving smoothly you will be able to make
smooth shapes quickly and easily. PRACTICE.
Do a quick test by placing a sample piece of material between the jaws, and then pulling down
on the handle and ensuring that the jaws bite down and pull apart for the stretcher. For the
shrinker the jaws should bite down and squeeze together. The jaws should return to their open
relaxed position when the handle is raised.
Try using the tool with a sample piece of metal to get a feel for how it operates. Place the
material in the middle of the jaw box and pull down on the handle to form the metal. Work the
leading edge of the material first to break down the initial resistance of the metal. Move the
metal back and forth until the desired radius is obtained. You can control the pressure exerted
on the metal by how far you pull down on the handle.
The jaws have fine toothed edges to hold the piece part in place. Marks left on your piece part
can be removed with either an abrasive cloth or a wheel for appearance.
DO NOT close the dies without having work material between
Always wear proper eye protection with side shields, safety
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