Modeling is used to create the parametric content, constraints, and dimensions. To model a parametric part, you follow this sequence:
- Establish work planes on which to create the geometry of your model
- Create profiles and apply modifiers to define the shape and default size of the part.
To avoid distortion in the model, start with the larger features, which have more impact on the overall size of the part and then add the smaller features. For example, for a tee fitting, you first create the trunk of the tee and then add the branch.