We are trying to link a 3d CAD model into our Revit model, but the CAD model comes in as a giant un-explodable block which doesn't obey view ranges. We would like to be able to import this model somehow so that it respects view ranges so we don't see its components everywhere and we can select different layers. Is this possible? Would it require converting the model to a different file type?
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Create layers in CAD and assign elements to them, they will become subcategories that can be turned off/on in Revit,
create in-place generic model component and link CAD into it while in editing mode.
First of all , Geometry in a 3D DWG file imported or linked directly into a Revit project has no category assigned, and therefore will not be cut.
For example, if you create a level at the elevation of a typical wall and then switch to a plan view, the imported geometry will not cut at that level.
As a solution for this issue,
If you import the geometry into a cuttable family category (such as Generic Models), the geometry will be cut according to your plan view range (if the geometry is just items not a whole building)
or use an in-place family from within a project.
If the geometry is a building then you can use" Massing"
* Use the Massing & Site tab, then pick In Place Mass then Link the AutoCAD model.
But you will face some issues, as:
Plan Region: You can not use the plan region properly (i.e. you will have the same view range for the whole plan)
The complexity of the inserted/linked CAD file : if it is a big model with a lot of detail you should have split it into multiple instances to avoid the attached error.
Managing line colors (Layers) : then you can modify from " Visibility graphics override (VG)" ( for a specific view) or from "Object style" (for all views) ,see the attached JPG.
I wish I helped you , Please mark this response as "Accept as Solution" if it answers your question.
I've been burned many many times by trying to bring in AutoCAD stuff into Revit. CAD and Revit are not particularly friendly - BTW.
Worst and most drastic case scenario - import each CAD into its own Generic Model family. Insert the families into the Project as required. Divide and rule.
Revit 2025 now has the option, when you click on the link, to "enable cutting in views" in the properties palette.
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