process is shown in figure 16-4 and in the following

following exercise are taken from figure 16-4. In this

step-by-step exercise. Before continuing with this

figure, a scale of 1 inch = 12 inches is used.

exercise, you will need a tangent table (table 16-l),

compass, straight edge, calculator, protractor, paper,

1. Find the center of the bending circle by drawing

and a pencil.

line DE down at a right angle from any point on line AB

16-4