Convert LOB to DWG

Understanding LOB and DWG file formats

LOB files are typically associated with ArchiCAD library objects, used to store parametric object data for architectural design. These files are not standard CAD drawings but rather contain object definitions, scripts, and parameters for use within ArchiCAD projects.

DWG is a widely-used file format developed by Autodesk for AutoCAD and other CAD software. It stores 2D and 3D design data, including geometry, maps, and photos, making it a standard for sharing and editing CAD drawings.

Why convert LOB to DWG?

Converting LOB to DWG allows you to use ArchiCAD library objects in AutoCAD or other DWG-compatible CAD applications. This is useful for collaboration, sharing, or further editing in environments where DWG is the preferred format.

How to convert LOB to DWG

Direct conversion from LOB to DWG is not natively supported, as LOB files are not drawing files but object libraries. However, you can follow these steps:

1. Open ArchiCAD and load the LOB library object into your project.
2. Place the object in a new or existing ArchiCAD project file.
3. Go to File → Save As or File → Export.
4. Select DWG as the target format.
5. Configure export options as needed and save the file.

This process converts the placed object (as part of the project) into a DWG drawing, which can then be opened in AutoCAD or other compatible software.

Best software for LOB to DWG conversion

• ArchiCAD – The only reliable way to use LOB files and export their content to DWG. Use the built-in export feature.
• AutoCAD – For opening and editing the resulting DWG files.

There are no dedicated online converters for LOB to DWG due to the proprietary nature of LOB files. Always use ArchiCAD for this workflow.

Key considerations

• Only the placed objects in a project can be exported, not the raw LOB file itself.
• Some parametric or script-based features may not fully translate to DWG format.
• Review the exported DWG in AutoCAD to ensure all elements are correctly converted.