Extruding Shaded Sketch Contours To extrude shaded sketch contours: In sketch mode, click Shaded Sketch Contours (Sketch Toolbar) or Tools > Sketch Settings > Shaded Sketch Contours. Use Shaded Sketch Contours to turn-off the tool. Sketch three concentric circles inside a rectangle.The outermost circle is the lightest and the innermost circle is the darkest shade of blue. Click any sub-contour of the sketch entity and drag it.The whole sketch entity moves. Press Alt and click a shaded area.The Extruded Boss/Base tool appears on the context toolbar. Click Extruded Boss/Base. Set options in the PropertyManager and click .The shaded area is extruded. Parent topicSketching Related concepts Enhancements to the Segment Tool Prevention of Accidental Micro Lines Shaded Sketch Contours Related tasks Creating Sketch Offsets on 3D Geometry Surfaces