CATIA V5 Fundamentals-Reusing Data

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Scaling the Part to Define Mold Shrink• A part gets scaled differently depending on the type of element used as the reference.• In the design of the model for an injection molded plastic part, the design part will often be scaled up to account for material shrinkage upon cooling. Depending on the material, the part may shrink by different amounts in each direction.


A part gets scaled differently depending on the type of element used as the reference.If a point is used, the scaling is done using the same scaling ratio in all three directions.In the design of the model for an injection molded plastic part, the design part will often be scaled up to account for material shrinkage upon cooling. Depending on the material, the part may shrink by different amounts in each direction.

In these situations, you cannot use a point as the reference. You must use a plane or a planar face. This will scale the part only in a direction normal to that plane. You can then do three separate scaling transformations in each of three directions which will properly define the shrink in all three directions.