How to model a face cam (or) drum cam? pl's post a step by step tutorial

Continue after step 10.
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Step 1:
11. Open a new 3Dsketch, and select the lower tangent loop and click convert entities. Exit the 3Dsketch.
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Step 2:
12. Repeat the convert entities step for upper loop and exit the 3D sketch.
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Step 3:
13. Create a new sketch on the right plane and draw a rectangle and dimension it.
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Step 4:
14. Use swept cut feature.
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Step 5:
15. Select the Profile, Path and also the Guide curve as shown in the picture. Make sure your settings in 'options' match the
parameters shown in picture.