This time to introduce AutoCAD 3D parametric dynamic constraint teaching ...
This video is a pure show with ...
Parametric constraints can only be used in 2D objects ...
So we use block plus 2D line objects ...
So that you can meet the parameters of the use of constraints ...

▼AutoCAD 3D parametric constraint display
https://youtu.be/E_mERq6Ah_A

▼AutoCAD 3D parametric constraint teaching
https://youtu.be/r_-Tx8Tw1gs