Weldments functionality allows you to design a weldment structure as a single part. There are two lessons in this tutorial.
In the Weldment Parts lesson, you create the weldment shown below. The weldment includes:
Structural members
Cut list (before update)
Trim and extend features
End caps
Gussets
Weld beads
In the Weldment Drawings lesson, you create a drawing for the weldment. The drawing includes:
Cut list (after update)
Custom properties
View of an individual body of the weldment part
Next 
to start the
Weldment Parts lesson.