Although AutoCAD Mechanical toolset ships with over a half a million standard parts and features, a specific item you require may not exist.
For example, the standard part library shipped with AutoCAD Mechanical toolset does not contain piping parts. To assist you in such a scenario, AutoCAD Mechanical toolset provides the ability to build your own content and store them in custom content libraries.
There are other cases where you need a variation of an existing standard part. For example, a steel shape with a hole at a specific place. To assist you in such a scenario, AutoCAD Mechanical toolset provides the ability to copy the standard part to a custom content library and modify it as required.
There are other times when you want to perform a simple change to a standard part. For example, change the material of a screw from steel to brass. To assist you in such a scenario, AutoCAD Mechanical toolset lets you customize the standard part content library.
Content in custom content libraries can be like block libraries; single view geometries that do not update the BOM or resize during insertion. They could also be fully fledged parts/features such as those in the standard part content library.
Custom content that exploit the available authoring features can bear these features:
The topics in this section provide instructions on how to author custom content with these features. They also discuss how to customize standard part libraries and distribute content libraries.