Model-Based Definition

Dimension and Annotate Your 3D Models to Create a “Single Source of Truth” Everyone Can Rely On

engineer works on model-based definition (MBD) #D model in office

What Is Model-Based Definition (MBD)?

Model-based definition is an approach to creating 3D models so that they effectively contain all the data needed to define a product. Traditionally, this data resided on 2D drawings—but with MBD, the model becomes the source authority that drives all engineering activities. This model may further be used downstream by suppliers and across organizations within an enterprise.

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Why MBD?

For years, engineers used 2D drawings to deliver product manufacturing information—even as they designed models in 3D.

No more. Using model-based definition (MBD) methods, engineers now embed product data directly in the 3D models, creating a single, reliable source of truth for the whole extended team. That not only makes sense, it prevents errors and saves everybody time.

Creo Parametric provides the tools you need to annotate, publish, and view MBD-compliant models, including Augmented Reality. Add the Creo GD&T Advisor Extension, and you can be sure your work, and that of your team, follows ASME standards.

What the Experts Say


Don’t wait to adopt tools for MBD. Jennifer Herron explains why in this short video.

Why Creo GD&T Advisor?

The GD&T Advisor Plus allows you to reuse the accurate parts of your legacy GD&T annotations while highlighting errors that they may have and providing recommendations on how best to resolve the problems uncovered.

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