Grizzly Slip Roll 16 Gauge G5771 - Manual (Page 19)

g5771 50" slip roll 16 gauge
-17-
creating cylinders
the Model g5771 slip roll can be used to easily
and accurately create cylinders.
if you know the diameter of the cylinder you want
to create, use the formula below to calculate the
length of material needed.
c= πD
C=Circumference
(length of Material needed)
π=pi (approximately 3.142)
d=diameter
Example: suppose you want to create a 6" diam-
eter cylinder. you would use the above formula as
follows:
C= πd
C=(3.142) x 6"
C=18.852"
the result of 18.852" indicates that you need to
start with a piece of sheet metal that is approxi-
mately 18.852" in length in order to create a 6"
diameter cylinder.
you can use the slip roll to create a bend with the
correct radius so that the two ends meet, forming
a 6" diameter cylinder (
figure 21).
&-#-*'8^gXjb[ZgZcXZ
Ldg`e^ZXZ
+9^V#
82ð9
82(#&)'m+
82&-#-*'
figure 21. Calculating circumference example.
once you have the necessary length workpiece,
follow the steps below to create the cylinder.
Note: The method for creating a specific radius is
a trial-and-error process. Due to the many varia-
tions among metal workpieces, no single position-
ing will create the same curve on all materials. We
recommend using scrap pieces the same dimen-
sions and material as your final workpiece until the
desired curve is achieved.
to create a cylinder:
1. place the workpiece between the upper and
lower rollers, as shown in figure 22. turn the
thickness adjust knobs to lift the lower roller
until the workpiece is held snug between the
upper and lower rollers. Be sure to turn the
thickness adjust knobs equal amounts.
8L
figure 22. raising lower roller.