Revit Tip: DWG Cleanup and Revit Link Best Practices

Clean DWGs before linking them into Revit to reduce file size, eliminate warnings, and keep coordinates trustworthy.

Why it matters

• Prevents bloated RVT files and slow navigation.
• Reduces “far from origin” and “line slightly off axis” warnings.
• Improves snap accuracy, visibility control, and print consistency.

In AutoCAD: a focused 10–15 minute cleanup

• Audit and Purge
  • AUDIT (fix all), then -PURGE > All, repeat until nothing remains.
  • -PURGE > Regapps to strip registered app data.
  • OVERKILL to remove duplicates, overlaps, and tiny objects.
• Flatten and simplify
  • Set UCS to World; FLATTEN 3D geometry you only need as 2D (yes to convert splines).
  • Delete hatches, raster images, OLEs, and wipeouts you don’t need.
  • Explode/burst overly nested blocks; keep ByLayer properties.
• Layer and linetype hygiene
  • Enforce ByLayer for color/linetype/lineweight; remove ByBlock overrides.
  • LAYDEL or MERGE junk layers into a minimal, logical set.
  • Reset annotation scales: SCALELISTEDIT > Reset; set LTSCALE and PSLTSCALE to 1.
• Units, origins, and Xrefs
  • UNITS: set the intended unit; confirm INSUNITS matches (inches or mm are typical).
  • Move model close to 0,0,0 in WCS if georeferencing isn’t required.
  • Resolve Xrefs: ETRANSMIT to consolidate or BIND cleanly; avoid broken paths.
• Final save
  • One more -PURGE All and AUDIT, then save to a recent DWG format.

Then in Revit: link safely (don’t import)

• Use Link CAD, not Import CAD, to keep RVT lean and maintain control.
• Positioning: use Origin to Origin only if you coordinated origins; otherwise use Shared Coordinates. Avoid Center to Center.
• Set Correct Units explicitly (don’t rely on Auto-Detect if you know the source).
• Color: Black and White for clarity; Current View Only if you need view-specific links.
• Place links on a dedicated “CAD Links” workset so you can unload/close when not needed.
• Pin the link; use a Scope Box and View Templates to standardize visibility.
• Override Import Categories by layer (VG) to mute heavy lineweights or turn off junk layers globally.

Quality checks before you proceed

• Do grid/wall snaps feel precise? If not, recheck units and flattening.
• Are view pans/zooms snappy? If not, revisit the DWG to remove hatches/images.
• Any warnings on link load? Inspect for far-from-origin and fix at the source.

Pro tips

• Keep a repeatable DWG cleanup script or checklist for your team.
• Archive the “raw” DWG and the “clean” DWG; link only the clean version.
• Document assumed units and origin in your project setup notes for coordination.

Looking to standardize your CAD-to-Revit pipeline or upgrade your toolset? Consult the experts at NOVEDGE for guidance on Autodesk licensing, training resources, and workflow optimization. For team-wide adoption, partner with NOVEDGE to establish robust CAD link standards across projects.