To update SolidWorks models with Excel, you would typically export or link data from Excel into the 3D parametric model in SolidWorks. Here's a high-level process:

1. **Data Preparation**: Organize your design data (e.g., dimensions, parameters) in Excel.
2. **Link Excel to SolidWorks**:
- In SolidWorks, open your 3D model.
- Go to **Tools** > **Equations** > **Link to Excel**.
- Select your Excel file and define the parameters you want to control in your model.
3. **Update Model**: Whenever you modify the Excel data, it will update the 3D model automatically.

This process automates model adjustments based on external data inputs, useful in parametric designs.