Copyright Goodheart-Willcox Co., Inc. 324 AutoCAD and Its Applications—Advanced Offsetting a Feature to Change Its Size Now, the Face Offset option is used to increase the diameter of the four holes and to adjust a rectangular slot that will be added to the solid. 1. Using Face Offset, select the four small hole diameters. Be sure to remove from the selection set any other faces that may be selected. 2. Enter an offset distance of –.05. This increases the hole diameter and decreases the solid volume. Exit the SOLIDEDIT command. 3. Select the RECTANG command. Set the fillet radius to .4 and draw a 2 × 1.6 rect- angle centered on the top face of the solid. See Figure 12-20A. 4. Imprint the rectangle on the solid. Delete the source object. 5. Extrude the rectangle completely through the solid (.5 units). Remember to remove from the selection set any other faces that may be selected. 6. Offset the rectangular feature using an offset distance of .2 units. You will need to select all faces of the feature. This decreases the size of the rectangular opening and increases the solid volume. Your drawing should appear as shown in Figure 12-20B. Tapering Faces One side of the part is to be angled. The Face Taper option is used to taper the left end of the solid. 1. Using Face Taper, pick the face at the left end of the solid. 2. Pick point 1 in Figure 12-21A as the base point and point 2 as the second point along the axis of tapering. 3. Enter a value of –10 for the taper angle. This moves the upper-left end away from the solid, creating a tapered end. The result is shown in Figure 12-21B. A B Figure 12-20. A—The diameter of the holes is increased and a rectangle is imprinted on the top surface. B—The rectangle is extruded to create a slot. Point 2 Point 1 A B Isometric View Before Applying Taper Top View After Applying Taper Figure 12-21. A—The left end of the object to be tapered. Notice the pick points. B—Top view of the object showing the applied taper.