SolidWorks 2010 Bible

Part II: Building Intelligence into Your Parts

sides of the fillet are controlled, it is not possible to span between the hold lines with an arc that is

tangent to both sides unless you were careful about setting up the hold lines so that they are equi-

distant from the edge where the faces intersect. This means that the double hold line fillet must use

a spline to span between hold lines, as shown in Figure 7.48.

FIGURE 7.48

A double hold line uses a spline, not an arc.

Arc tangent on both ends

does not fit both edges

Spline tangent

on both ends fits

To get this feature to work, you need to use the curvature continuous option in the Fillet Options

panel. Remember that this option creates a spline-based fillet rather than an arc-based fillet, which

is exactly what you need for a double hold line fillet. This makes the double hold line fillet more of

a blend than a true fillet. Figure 7.49 shows examples of the double hold line fillet.

Constant width fillet

The Constant width option of the Face Fillet PropertyManager drives a fillet by its width rather

than by its radius. This is most helpful on parts where the angle of the faces between which you

are filleting is changing dramatically. Figure 7.50 illustrates two situations where this is particu-

larly useful. The setting for constant width is found in the Options panel of the Face Fillet

PropertyManager. The part shown in the images is on the CD-ROM as Chapter 7 Constant

Width.sldprt.