Eastwood 20521 Instructions Manual page 9

4" metal bender
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FOR PRODUCING REPEATABLE BENDS
1. To record the depth and angle of bend: Using the gauge located along the slot on top of the tool
body, record the dimension aligned at the rear edge of the Drive Bar (FIG 3).
There will be a certain amount of "springback" meaning that you must rotate past your
gauge target then allow it to "spring back" to the final desired bend angle. This varies
widely according to the particular material and thickness being worked. Chromoly
and high carbon steel will generally have more "springback" than milder steels and
aluminum. This is one reason that some "trial and error" must be performed to
explore the properties of the material before working on a final project piece.
FIG. 4
Bend Stop
Location
Record This
Dimension
2. To record the location of bend: Set the position of the Workpiece Stop Gauge [G] so that
the point where the bend is to occur on the workpiece is determined by where the edge of
the workpiece contacts the Stop Gauge (FIG 4).
To order parts and supplies: 800.345.1178 >> eastwood.com
8mm
Shear Pin
9

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