Using Blender 2.5
Extremely versatile tool that allows modeler to create flowing meshes and objects, that vary in rotation, size, and shape along the objects length. See a simple example of extrude below.
Step 1: Delete the cube in a new Blender file.
Step 2: In Absolute top view (NumPad 7), add a cylinder Add>Mesh>Cylinder .
Step 3: Switch to Edit Mode TAB key or click
Step 4 : Switch to Absolute Front view (NumPad 1)
and change from Solid to Wireframe view (Z) or change the to
Step 5 : Press (S) for scale and squish the cylinder thin, click to plant scale.
Step 6: Press A to deselect ALL the vertices, the yellow will turn off
Press B and draw a selection over the top of the cylinder. Now the vertices that define the top end of the cylinder should be selected (yellow).
Step 7: Press E for Extrude , Then move the new vertices up.
Step 8: Press S and scale down the selection to a narrower size
Step 9 : Press E again and Extrude the region again. Notice the extrusion is narrower. You might have to pan up a little (Ctrl+8).
Step 10: Extrude the region again, but do not move the vertices, press Enter/Return or mouse click right away.
Step 11: Press S and scale-out the selection. Extrude>Region again and move the vertices up.
Step 11: Switch to the Object mode (tab) or
and change to the camera view (NumPad 0)
Thanks to Jerry Sereda of St James School Division and ManACE