12. Edit polygons>Extrude face, and line it up with the End of the Pen Clip, Use the Rotation Manipulator to Model the faces in correspondence with the Pen Clip. Do this over and over until you're at the end of the Pen Clip. Just extrude, and change the rotation, Extrude again Change the Rotation. In this particular situation, we will only need to rotate on the X axis, so only use the Red Line in the Rotation Manipulator to Rotate the Faces. After a little bit of work Your Pen Cap should look like this...