4.Rotate the radius adjustment knobs coun- terclockwise to raise the rear roller until the desired radius bend is reached (see Figure 11).
Note: You must turn the radius adjustment knobs in equal amounts so the rear roller is always parallel with the other rollers. Otherwise, a larger radius will be created on one end of the workpiece, resulting in a cone or spiral shape.
Workpiece
CCW
Figure 11. Setting the bend radius.
5.rotate the hand crank clockwise to feed the workpiece completely through the rollers and produce the bend (see Figure 12).
Workpiece
Figure 12. Forming the bend.
Creating Cylinders
The Model T10727 Slip Roll can be used to easily and accurately create cylinders.
To make sure the ends of the completed cylinder meet correctly, use the formula below to calculate the required beginning workpiece length.
C = π D
C = Circumference
(Length of Material Needed)
π= pi (Approximately 3.142)
D = diameter of Cylinder
Example: Suppose you want to create a 6" diam- eter cylinder. You would use the above formula as follows:
C = π D
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 (see Figure 13).
C = л D
C = 3.142 x 6"
C = 18.852
6" Dia.
Workpiece
18.852" Circumference
