You can create customized connections, parts, seams, and details for your project. These are called custom components. You can use custom components in the same way as any Tekla Structures system component. You can even create intelligent custom components that automatically adjust to changes in the model.
When to use
Create a custom component if you cannot find a predefined system component that meets all your needs. Especially if you need to create a large number of complex model objects and copy them across several projects.
Once you store a custom component in the Applications & components catalog, you can easily access it from the catalog and use it in another location in the same model. If you must modify the custom component, you only need to make the changes once. When you save the changes, they will be automatically applied to all copies of that custom component in the model. You can also import and export custom components as .uel files between models and share the custom components with your colleagues.