DWG Management - User Guide & Reference

The DWG Management utility (CAD category) CAD imports and links auditor. Identifies all CAD imports (ImportInstance) and links (CADLinkType) in the project, catalogs their file sizes, lists the specific sheet or view names they are placed in, and allows batch renaming or deleting to keep the model clean and performant..

1. Overview & Key Capabilities

The DWG Management tool is designed to improve workflow efficiency by automating standard tasks. Key capabilities include:

• CAD imports and links auditor.
• Identifies all CAD imports (ImportInstance) and links (CADLinkType) in the project, catalogs their file sizes, lists the specific sheet or view names they are placed in, and allows batch renaming or deleting to keep the model clean and performant.

2. Detailed Step-by-Step Usage

Follow these instructions to use the tool in your active Revit session:

1. Open the DWG Manager dialog.
2. Filter display by CAD type: Imports Only, Links Only, or All.
3. Review the details: file paths, file sizes, and view counts of CAD placements.
4. Select unnecessary local CAD imports that damage performance (marked with high view counts or large sizes).
5. Click Delete Selected to clean up, or rename items directly in the table.

3. Technical Specifications & Under the Hood

Revit API Integration

• Key API Components: ImportInstance and CADLinkType auditing. Collects external file paths and view specific placement records in the model database.
• Transaction Handling: All modifications are packaged into a single Revit API transaction. If any error occurs, the changes are rolled back automatically to preserve model integrity.

[!TIP] Best Practice Tip: Avoid imported CAD instances. Always link CAD files instead of importing them, as imports bloat the file size and corrupt styling variables.