3. Use the intersection points as alternate centers

for the point of the dividers. Draw intersecting

arcs inside the angle (view B).

4. Use this point of intersection (O) as the center

for the point when you draw the fillet, as shown

in view C.

Use the following steps to draw a fillet or round

when the lines form an angle that is not a right angle.

Look at figure 14-14 as you read these steps.

4. Next, place the point at C and strike another arc

1. Draw lines inside the angle that are parallel to

intersecting the arc at D (view B).

the first two lines. Draw them a distance of a

given radius from the first two lines (view A).

5. Place one divider point where these two arcs

The intersection of these parallel lines will be

intersect and strike an arc to the points of

the center of the fillet's arc.

tangency (view C).

2. Find the exact points of tangency, as shown in

view B.

3. Now draw the fillet, using the intersection of the

inside lines (point 0) as the center of the circle.

Small arcs tangent to two lines forming an inside

Start at one point of tangency and stop when the

comer are fillets. They must often be drawn after the

arc touches the other point of tangency (view C).

straight lines have been drawn. Small arcs tangent to

two lines forming an outside comer are rounds.

Use the following steps to draw a fillet or round

when two lines form a right angle. Remember, look at

Any of the methods of drawing fillets apply in

figure 14-13 as you read these steps.

laying out large circles or arcs tangent to other arcs. The

trial-and-error method is shown in figure 14-15. In this

1. Adjust the dividers to the required radius.

figure, the arc of a large circle is tangent to two small

2. Place one point of the dividers at the comer of

circles or arcs. Points T and Tī are estimated as the

the angle, and draw a short arc intersecting each

points of tangency. Use them to find the intersecting

straight line (view A). Intersection points of the

arcs at point O. Point 0 is used as the center in drawing

arcs and the lines are the point of tangency.

the arc from T to Tī.

14-11

Integrated Publishing, Inc. |