Tutorial to make animation for a compression spring in solidworks.
Answered with a tutorial: https://grabcad.com/tutorials/how-to-make-an-animation-for-a-compression-spring-in-solidworks-2011
Step 6 and step 7 is so confused to me.
When i click on centerline ( on her top point and on circuit line of the part behind) i get this option
You get this option
I used SolidWorks 2012
Additionally to what Steen Winther said, there's another important detail that is not highlighted enough (although it is said in the tutorial) for this method to work: the coil sketch MUST be in EDIT mode before connecting the upper point of the coil axis ant the center of the upper plate.