I'm trying my hand at modeling different types of parametric spring models, but I'm running into issues creating a rectangular spring. I am trying to make a parametric model of the magazine spring in a 1911 pistol (http://michigancenteroutdoors.com/sitebuildercontent/sitebuilderpictures/webassets/wolff_69162.jpg). I have succesfully created a model using a slightly tweaked version of the method shown for creating a square spring on YouTube, but the it doesn't update correctly. Here are the issues it has:
1. When the pitch parameter is changed, the trajectory for the sweep fails.
2. This method doesn't take into account that the overall width of the spring changes as it flattens out.
3. The current method requires too many steps.
If anyone out there knows of a better way to go about modeling this, I would love to hear from you. I'm attaching a copy of what I have so far for anyone that is interested in taking a look.
BTW, I am using WF4.0.