Continue after step 16.
16. The preview should look loke this.
17. Complete the swept cut operation and the cam is complete.
18. FOLLOWER :
This is a cylider with a point sketched in its face.
19. Assemble the cam and follower. See the mates in the file here Request : Drum cam
20. Video : http://youtu.be/9ZUUYZ1a4e4