Copyright Goodheart-Willcox Co., Inc. Chapter 11 Subobject Editing 297 7. Use the REVOLVE command to turn the left-hand face of the 60″ extension into a new solid that is a 90° bend. Your drawing should now look like Figure 11-33. Editing Edges and Vertices 1. The bottom surface of the 28″ reducer must be level with the bottom of the tee junction and main trunk. Select the bottom edge of the reducer’s front face and move it down 4 15/16″. 2. Select the two top vertices on the 28″ reducer’s front face. Move the vertices down (negative Z) 3″. 3. Select the front, rectangular face of the 90° bend and extrude it 72″ into a new solid. 4. Select the front face of the 28″ reducer and extrude it 108″ into a new solid. 5. Select the front face of the new solid created in step 4 and extrude it 26″ to create a new solid that will be a tee junction. 6. Extrude the left-hand face of the tee junction 20″. See Figure 11-34. Figure 11-32. Two reducers are created by extruding faces from the tee junction. Figure 11-33. The left end of the 60″ extrusion is revolved 90° to create an elbow.