Using Parameters (Parametric) modeling in 3D

[sbalk1]

Good Morning, 

I am new to Autocad, and to Autocad Mechanical. I am using the 2020 version. My questions are regarding the use of parametric constraints. I am able to create a drawing and control the drawing with parametric constraints. Once, I extrude my part, I no longer am able to access the parameters. 

How can I model parts, and use parametric constraints? 

I cannot seem to do this in Autocad 2020 or in Autocad Mechanical 2020. Thanks for any advise. 

Steve

[cheryl.buck]

Hi @sbalk1,

I see that you are visiting as a new member to the AutoCAD Mechanical forum. Welcome to the Autodesk Community!

Thank you for your question. Parametric constraints are designed to work with 2D geometry, once extruded, the parametric constraints no longer apply to the extruded geometry.  See the following Autodesk Knowledge Network (AKN) articles regarding 2D Parametric Constraints: 

About Parametric Drawing and Constraints | AutoCAD

As the 3D features in AutoCAD are not true solid models, the selection of 3D constraints that can be created in AutoCAD is a limited.  Dependent on the type of constraints you need, many users find it much easier to work with either Inventor or Fusion 360 which are designed this. 

This forum post from CADForum discusses one way to work with constraints for 3D objects:

https://www.cadforum.cz/cadforum_en/parametric-constraints-between-3d-objects-in-autocad-tip11761

Please let me know if this helps.

All the best, 

[cheryl.buck]

Hi @sbalk1 

I am checking back to see if my post helped you with your problem. Please post an update letting the community know.

All the best,

[sbalk1]

Thanks for checking back, 

yes this was helpful, and I understand.