Thank you Stephen. I finally did it. :)
Answered with a tutorial: https://grabcad.com/tutorials/tutorial-how-to-model-a-gas-cooker-knob-in-solidworks
For two days i'm trying to upload files for this tutorial and it gives me an error. I hope this issue to be solved.
I have had the same problem for a while. Go here;
and look at the second tutorial made by me. It is a work-around that is a bit of a pain in the butt but it does work.
You are an Angel.
I`m glad it helped you.