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One of the most frustrating CAD experiences is changing one dimension and watching half the model fail. The solution is not always a more powerful computer. Often it is better design intent in SolidWorks.
Model the Reason, Not Just the Shape
If two holes must always remain centered on a face, model that relationship. Do not simply place them at today’s coordinates.
Use the Right References
Stable planes, axes and meaningful faces are usually better references than temporary edges created late in the feature tree.
Keep the Feature Tree Understandable
Rename important features. Group related operations logically. Another engineer should be able to open the part and understand why the model was built that way.
Avoid Over-Complicated Sketches
Large sketches can become difficult to diagnose. Break complicated geometry into sensible features when that makes the design easier to maintain.
Test the Model
Change a key dimension intentionally. Suppress a feature. Change a configuration. If the model behaves as expected, your design intent is probably doing its job.
Keep learning: Explore more practical engineering articles in the GetCADFile Design Guide.