How to Develop BIM Skills and Repair Damaged AutoCAD Files

Question:

How can you repair damaged AutoCAD drawing (.dwg) files? The graphic files may exhibit one or more of the following issues:

• The file cannot be opened.
• An error occurs while opening the file.
• AutoCAD freezes or crashes when handling the file.
• Editing performance is significantly degraded.
• Error messages appear during file processing.
• Commands become unresponsive or delayed.
• The file size increases unexpectedly without explanation.
• Display or regeneration problems occur.
• Graphic elements are missing or displayed incorrectly.

Possible Causes:

• Third-party software running within AutoCAD.
• Files created or saved using non-Autodesk or non-RealDWG applications.
• AutoCAD was interrupted while saving the file, such as during a power outage or surge.
• Repeated use of outdated drawing files over a long period.
• Network issues causing transmission errors, file locks, or incomplete data writes.
• Storage media degradation, like bad sectors on a hard drive.
• Faulty or malfunctioning system RAM.
• Operating system-related problems.

Solutions:

Try the following methods one by one to repair your AutoCAD files:

1. If the file opens, optimize it by using AutoCAD’s Clean, Check, and Recover commands.
2. If the file cannot be opened, attempt to recover the drawing using AutoCAD’s recovery tools.
3. Optimize the drawing by performing copy and paste operations via the Windows clipboard.
4. Use the WBLOCK command to export the drawing to a new file.
5. Apply the OVERKILL command to remove duplicate or overlapping objects.
6. Use the DELCONSTRAINT command to eliminate excessive constraints in the drawing.
7. Utilize BREP commands (available only in full AutoCAD, not in AutoCAD LT) to fix issues with selecting or modifying 3D solids and surfaces.
8. Use the SCALELISTEDIT command to clear unnecessary annotation scales.
9. Run the VNet command to remove redundant layer filters.

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