Making Copied Feature Dimensions Independent
When you use the Dependent command to create a feature by copying another feature, all the dimensions of the parent feature (except those selected as variable when copying by References) become shared between the parent feature and its copy.
If you modify the value of a shared dimension, both features change simultaneously.
Use the Make Indep command to make any shared dimension (including the number of pattern instances) of the copied feature independent from that of the parent feature. The MAKE INDEP menu contains the following commands:
Dimension—Select the dimensions that the copied feature shares with its parent to make them independent of the parent feature.
Section—Pick a copied feature to make its section independent from its parent feature.
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When in Part or Assembly Modes, you can make a dimension independent by selecting the dimension, right-clicking, and selecting Make Independent on the shortcut menu.