How to Insert an RFA File in AutoCAD?

A clear, beginner-friendly guide to inserting a Revit family (.RFA) into AutoCAD by converting it to DWG, plus alternative methods, troubleshooting, and practical tips.

Introduction

If you work across BIM (Building Information Modeling) and CAD workflows, you’ve likely encountered .RFA (Revit Family) files that you need inside AutoCAD. AutoCAD does not open RFA directly, so the typical route is to convert the RFA into a DWG and then insert or xref that DWG into your AutoCAD drawing. This guide explains clear, step‑by‑step conversion and insertion methods, alternative workflows, common errors and fixes, and practical tips to keep the data accurate and manageable.

Why insert an RFA into AutoCAD?

• Use high‑detail Revit family geometry inside CAD drawings for coordination and documentation.
• Improve collaboration between architects/engineers using Revit and draughtsmen using AutoCAD.
• Preserve family detail (geometry and placement) for accurate plans, sections, or 3D coordination.

Key terms: RFA, Revit, DWG, AutoCAD, BIM.

Step‑by‑step: Convert an RFA to DWG (recommended workflow)

1) Preparation in Revit

1. Open Revit.
2. Either open the RFA in the Family Editor or (preferably) load the family into a Revit project and place it in a view. Exporting from a project view often yields better control over how the family appears (2D annotations, visibility, view scale).
3. Adjust the view that will be exported (plan, elevation or 3D view). Set Visibility/Graphics (VG), view display (realistic/hidden line), and detail level to the desired appearance.

2) Export to DWG

1. From the File (R) menu → Export → CAD Formats → DWG.
2. Choose an existing DWG export setup or create a new one. Important options to configure:
   • Export object styles and layer mapping (map Revit categories to DWG layers).
   • Export units (make sure units match your AutoCAD project).
   • Export as 2D/3D (choose 3D DWG if you need solids/polys).
   • Include linked models or not.
3. Select the views/sheets to export, or export the active view.
4. Click Export and save the DWG to your desired folder.

Notes:

• Exporting from a 3D view will create 3D geometry (useful if AutoCAD 3D is required).
• Exporting from plan or detail views results in 2D geometry and annotations.

3) Verify the exported DWG

• Open the DWG in AutoCAD or a viewer to confirm layers, scale, line weights, and geometry look correct.
• If something is missing, go back to Revit, adjust the view or export mapping, and re-export.

Step‑by‑step: Insert the converted DWG into AutoCAD

1) Open your AutoCAD drawing

• Launch AutoCAD and open the drawing file where the component should be placed.

2) Insert or attach as XREF

• For a one‑off object: use the INSERT command, browse to the DWG, set insertion point, scale, and rotation, then place.
• For better coordination and manageability: use XREF (Attach External reference) to keep the DWG linked rather than embedded — easier to update when the source changes.

3) Check units and scale

• Confirm AutoCAD drawing units match the DWG’s units (TYPE: UNITS). If units mismatch, the inserted geometry will scale incorrectly.

4) Clean up and finalize

• Use PURGE to remove unused layers and blocks.
• Use LAYER commands to re‑organize layers if needed.
• If necessary, explode blocks (careful—this increases file size and can complicate edits).

Alternative methods and tools

• BIM interoperability Tools / Revit add‑ins: Some Autodesk or third‑party tools provide enhanced export options or batch conversions to DWG with custom layer mapping.
• Export to IFC: Export Revit to IFC for better semantic data exchange; open IFC in tools that can export to DWG or convert using specialized software.
• Export to SAT/ACIS: For accurate 3D solids, export geometry as SAT (ACIS) and import into AutoCAD (may preserve solid geometry better than DWG polyfaces).
• Navisworks: Combine/model Revit data in Navisworks and export to DWG or other CAD formats for clash coordination.
• Third‑party converters/services: Use online or desktop conversion tools if you lack Revit, but expect potential data loss—verify results carefully.
• Ask a Revit user: If you don’t have Revit, request a converted DWG from a colleague who does, specifying view, scale, and layer standards.

Troubleshooting common issues and fixes

• Missing components after export

  • Fix: Ensure the family is visible in the exported view and that “Export linked files” is enabled if parts come from links. Check export category mapping.

• Incorrect scaling

  • Fix: Verify units in both Revit export settings and AutoCAD drawing units. Re-export with matching units if needed.

• Layer chaos (too many or poorly named layers)

  • Fix: Use a custom DWG export setup in Revit to map Revit categories to your CAD layer naming convention. Clean up with LAYTRANS or layer filters in AutoCAD.

• Annotations or text missing or misplaced

  • Fix: Export from the appropriate annotation view (sheets are often better for annotation) and ensure text sizes are handled correctly by checking annotation scaling and export settings.

• 3D geometry appears as mesh/polylines and is non‑editable

  • Fix: Consider exporting to SAT for solid geometry, or export from Revit as a 3D DWG with the desired detail level. Some complex Revit geometry is triangulated on export.

• Large file size / slow performance

  • Fix: Simplify family geometry in Revit, export only the necessary views, purge unused elements, and use XREFs instead of embedding many DWG files.

• Materials and textures not preserved

  • Fix: DWG export focuses on geometry and annotation; materials generally do not transfer. Use native formats or specialized tools for material/exported render data.

Best practices and tips

• Always export from a controlled Revit view (set visibility, detail level, scale) to control output.
• Use a custom DWG export setup in Revit for consistent layer naming and line weights to match CAD standards.
• Prefer XREF (Attach as external reference) in AutoCAD for easier updates and smaller files.
• Before insert, run PURGE and AUDIT in AutoCAD to clean and repair DWG files.
• Keep a naming convention and folder structure for exported DWGs to avoid confusion.
• Document which Revit view/sheet produced each DWG so you can reproduce exports consistently.
• If you don’t have Revit, request exports in the exact view, scale, and units you need from the Revit user.
• For 3D coordination, consider SAT or IFC exports in addition to DWG to preserve solids and BIM data where possible.

Can I convert an RFA without Revit?

Yes and no. Direct, reliable conversion generally requires Revit or a BIM tool. Some third‑party services claim to convert RFA to DWG, but they often lose data or accuracy. The safest option is to obtain the DWG from someone with Revit or use a trusted conversion service.

Which is better: exporting from the Family Editor or from a Project view?

Export from a Project view is usually better because you control how the family sits in context (scale, annotation, visibility). Exporting from the Family Editor can work for simple geometry but may miss project‑specific display settings.

Should I insert the DWG or attach it as an XREF?

Use XREF when possible. XREFs keep files linked and manageable, simplify updates, and reduce main drawing file size. Use INSERT for single, finalized pieces that won’t change.

How do I avoid scaling problems?

Always confirm units in Revit export settings and in AutoCAD (UNITS). Export using the same target units and test with a known dimension before final placement.

My exported DWG is huge — how can I reduce size?

• Export only needed views and geometry.
• Simplify family geometry in Revit.
• Use XREFs instead of embedding multiple DWGs.
• Run PURGE and OVERKILL (to remove duplicate geometry) in AutoCAD.

Will annotations and tags transfer correctly?

Annotations can transfer if you export the appropriate views or sheets. However, some Revit annotation types may not map cleanly to DWG—always verify exported text, dimensions, and tags and adjust if necessary.