Working with Sub-assemblies
When an assembly is a component of another assembly, it is referred to as a sub-assembly. You can nest sub-assemblies in multiple levels, to reflect the hierarchy of your design.
Creating a Sub-assembly
There are several ways to create a sub-assembly:
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You can create an assembly document as a separate operation, then make it a sub-assembly by inserting it as a component in a higher-level assembly.
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You can insert a new, empty sub-assembly at any level of the assembly hierarchy while you are editing a top-level assembly, then add components to it in a variety of ways.
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You can form a sub-assembly by selecting a group of components that are already in the assembly. This creates a sub-assembly and adds components to it in a single step.
Modifying a Sub-assembly
As you develop an assembly, you can modify its sub-assemblies in these ways:
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You can dissolve a sub-assembly into individual components, thereby moving the components up one level in the assembly hierarchy.
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You can edit the assembly structure by moving components up or down in the hierarchy, or to a different branch of the hierarchy. There are two ways to do this:
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Drag and drop the components to move them from one assembly to another.
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Click Tools, Reorganize Components. This method can be easier to use when the FeatureManager design tree is very long, and therefore requires a lot of scrolling.
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You can change the order of the components within a level of the hierarchy.