Effective Methods for Cleaning and Repairing AutoCAD Drawings

BIM Software Tips: How to Clean and Repair AutoCAD Drawings

To effectively clean and repair your AutoCAD drawings, follow these recommended commands and steps:

Initial Preparation:

• Unlock, unfreeze, and unhide all layers.
• Remove all external references and delete any attachments.

Cleanup Commands:

• Select all objects, then run the Overkill command to remove duplicate or overlapping entities.
• (Note: The following commands are not applicable to AutoCAD LT)
• Run DGNPURGE to clean DGN objects:

• DGN patch for AutoCAD 2013/2014
• DGN patch for AutoCAD 2012

Additional Steps:

• Use filters to remove all layer filters. (Note: In AutoCAD LT, layer filters must be removed manually.)
• Verify the drawing with the Y option.
• Save the file using “Save As” to create a new copy, or overwrite the existing file.

Alternative Methods for Cleaning and Repairing Drawings:

• Use the WBLOCK command to save the entire drawing to a new file.
• If your drawing contains 3D primitives, use BREP to clear the history of those objects.
• Save the drawing as a DXF file, then reopen it and save it back as a DWG file.
• Use the AECTOACAD command to save new copies of your drawings.
• Insert the graphic into a new drawing file, then explode the blocks.
• Use DGNEXPORT to export the drawing to DGN format, then use DGNIMPORT to convert it back to DWG.
• Attach the file as an external reference to a new drawing, then bind the external reference.
• Save the drawing in an earlier DWG format, open it in an older version of AutoCAD, then save it again.

Generally, it’s recommended to follow the steps above in order. However, you can skip certain operations based on your project needs. For example, avoid removing external references if you’re unsure which elements are essential, or retain all layer filters if you prefer not to alter them.

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