Creating the assembly
Now that we have all the parts 3D-modeled, we can start exploring the assembly and joining all the parts together. We will do that in this section. We will start by talking about the fixed part, and then explore the different parts and the accompanying mates. The following drawing highlights the fully assembled pair of glasses as well as the names of all the parts:
The first part we insert into an assembly becomes a fixed part by default. There is no one answer to which part should be used as a fixed part in the assembly. However, a good practice is to select an inherently non-moving part. A good candidate is the bridge.
The following figure highlights the major mates for the pair. You may add more mates as required to get the desired result.
The next figure...