To scale a wall thickness 3D model, select the wall’s inner/outer faces in your 3D software, then use offset or scaling tools to adjust thickness while preserving the model’s shape.
- **Offset vs. Scaling**: Offset tools (e.g., Fusion 360’s “Offset Face,” SketchUp’s “Push/Pull”) move a face inward/outward to change thickness. Scaling tools (like Blender’s “Scale”) expand/shrink edges without distorting the whole model. - **Beginner Tips**: Duplicate your model first to test adjustments, and use the software’s preview feature to ensure thickness changes don’t affect adjacent parts.