verb
assemble
uh-SEM-buhl/əˈsembl/
To bring separate members or parts together into a whole.
They assemble the wooden table by joining its parts carefully.

Etymology
The Latin pieces formed a verb meaning “make like,” which later meant “gather together.” The modern verb retains that gathering sense and extends it to putting separate parts together.
In context
you’re just defining the relationships, using Constraints or 'Joints,’ to assemble individual parts, resulting in a multi-part model.
More examples
- A crowd assembled near the station.
- We are assembling a team of experienced guides.
- The bicycle arrived partly assembled.
Forms
assemble · assembles · assembled · assembling