Chapter 16. Modeling in Context


  • Understanding in-context modeling

  • Dealing with practical details of in-context modeling

  • Other types of external references

  • Using the Layout feature

  • Tutorial: Working in-context

The topic of in-context modeling often lends itself to questionable advice and suggestions based on an incomplete understanding of it or a superstition, even from experienced users. In this chapter, I present best practice suggestions and offer a balanced explanation with each one so that you can evaluate it for yourself. I give you enough facts so that you can decide for yourself if in-context techniques fit into your process.

If you are well disciplined in your modeling practices, and understand the functionality and potential problems of in-context modeling, then you can avoid these problems. However, if you have had one bad experience, you may be still focusing on it, and fail to see the positive side of using in-context modeling. Although dangers do exist, they often result from disregarding the rules.

Understanding In-Context Modeling

In-context modeling is also known as top-down modeling. It is a technique used to create relationships between two parts in the context of an assembly, where the geometry of one of the parts is controlled by both the other part and the mates that position them relative to one another.

In-context, or top-down, modeling may be contrasted against bottom-up modeling. Bottom-up modeling involves making the parts in their own individual ...

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