How to improve GD & T skills?

 How to improve GD&T skills and knowledge. Some quick nuggets

1.      First stop looking at GD&T as just a set of symbols or annotations and understand the concepts of size, form, orientation, and position of features.
2.      The difference between features and features of size
3.      Understand the differences in tolerance zones.
4.      Concept of datum. Differentiating Datum feature, simulated datum feature, and theoretical datum.
5.      The spatial reasoning of geometric relationships in terms of orientation and position.
6.      Concept of composite tolerances in position and profiles.
7.      Connection between Design, inspection, and manufacturing of a dimension/ tolerance specification.
8.      Understanding the Design intent underlying the dimensioning and tolerancing scheme.
9.      Take components as inputs and Create GD&T schemes. Troubleshoot them and improve.