You.must.include.the.thickness.of.folded.
edges. or. joints. when. determining. the.
proper. setback,. or. the. brake. may. be.
damaged.
Bending
Block
Clamping
Surface
Edge View
A
1
1
/
2
x A
Bending
Leaf
Setback
Distance
Finger
Figure.14..
Determining setback distance
for workpieces 22 gauge and thinner.
Figure.15..
Location of setback wheel and
cap screw.
-17-
Model M1118 (For Machines Mfd. Since 09/21)
O
PE
R
ATIO
NS
Adjusting.Setback
Before you begin any bending operation, consider
the differences of sheet metal gauges when trying to
achieve either sharp or rounded bends, and allow for the
differences by adjusting the setback.
Setback is the distance from the forward edge of the
fingers to the edge of the bending leaf, as shown in
Figure.14
. The setback distance is determined by the
gauge of the workpiece material and the desired radius of
the bend.
Setback is normally adjusted 1
1
⁄
2
times the thickness
of 22 gauge and thinner workpieces, and two times the
thickness of workpieces thicker than 22 gauge. M1118
material gauge capacities are listed in the
Machine.
Specifications
on
Page.3
.
Tool.Needed:.
Qty
Hex Wrench 6mm ...............................................1
To.adjust.setback,.do.these.steps:
1.
Determine setback required for bend.
2.
Raise clamping fingers about
1
⁄
2
" off of clamping
surface (see
Figure
14
,
A
).
3.
Loosen cap screws securing setback wheels (see
Figure
15
).
4.
Rotate both setback wheels until desired setback
distance is achieved.
Note:
Setback wheels are eccentric. Turning them
one full turn will bring clamping leaf back to its
original position.
.
Tip:
If you find it hard to turn setback wheels with
your fingers, insert a hex wrench into the holes on
edges of wheels to gain leverage.
5.
Lower clamping fingers onto clamping surface and
check setback distance.
6.
If necessary, repeat
Steps.2
–
4
until desired setback
is achieved.
7..
Check finger alignment (refer to
Aligning.Fingers
on
Page.16
).
Cap Screw
(1 of 2)
Setback Wheel
(1 of 2)
