A 3D solid must always be created using a 2D sketch. This 2D sketch is created in the Sketcher dialog area.
The drawings are created here in individual design steps, which in turn form the basis for extrusions and rotations in the 3D history [3D History] dialog area.
The Sketcher button
button or the corresponding menu item opens the Sketcher and Sketch History [Sketch history] docking windows or brings them to the foreground.
Detailed information on the Sketcher can be found at Section 7.9, “ Docking window "Sketcher " ”.