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Basic Bending
Do not operate machine unless it has been
securely mounted to a workbench, or it
could tip over on you, causing severe injury!
Bodily injury could result from using this
machine. Always wear safety glasses,
leather work boots, and heavy duty leather
work gloves when operating this machine
or whenever handling sheet metal.
All bending operations require the clamping fin-
gers to be parallel with the edge of the clamping
surface and bending block, and the setback and
clamping pressure must be correctly adjusted for
the thickness of the workpiece.
To perform basic bending operations:
1.
Determine setback required for bend (refer to
Adjusting Setback on Page 16).
2.
Raise clamping leaf.
3.
Insert workpiece between clamping fingers
and clamping surface.
4.
Align bend mark(s) on workpiece with fingers
and clamp it in place using clamping handles.
Note: If clamping handles do not lock, the
clamping pressure may need to be adjusted
(refer to Adjusting Clamping Pressure on
Page 17).
-18-
5.
With body square to brake and using both
hands, lift bending leaf until workpiece reach-
es desired bend angle.
6.
Raise clamping leaf and remove workpiece.
Hold onto the workpiece so it does not drop
and hit you when it is released!
Bending Allowance
To bend metal objects accurately, you need to
consider the total length of each bend, especially
when more than one bend is required. This is
called bend allowance.
Subtract bend allowance from the sum of the
workpiece outside dimensions to obtain the over-
all length and width of the blank needed to make
a particular part.
Exact allowances can only be obtained by trial
due to differences in sheet metal hardness,
whether the bend is with or across the grain, and
difficulties in making an exact bend radius. Bend
allowances accurate enough for average use may
be found in metalworking handbooks.
Model T28522 (Mfd. Since 09/18)
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