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If you change those layers to have Revit line patterns on Object Styles, delete the CAD imported ones and then reload your CAD link.Even if you choose to only bring in the visible layers, the line patterns of frozen layers still get imported in.ones with letters in them or the Batt Insulation one), Revit will convert them to something that it can make (solid line or dashed line) but still bring in an imported pattern with that CAD name. If the line patterns are ones that Revit doesn’t support (i.e.If you delete the line patterns and then reload the CAD link they all come back!.I recently found one called Project Sweeper that seems to work pretty well. Use a third-party add-in that can delete and replace one line pattern with another.Use Dynamo to swap out the line patterns with Revit ones.Write a Revit macro that will automatically delete any line pattern that starts with the word “IMPORT” – but this causes the same problem as #1.Delete these line patterns manually, BUT that will just make any lines with those patterns solid instead.See the imported line patterns that appear?! Getting rid of the line patterns – some options: Manage Links Dialog box – CAD links Line patterns dialog box before linking CAD file and after. One nice thing that it does do is rename those patterns with “IMPORT” at the beginning of the name, so that you can find them.
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While linking doesn’t bring in the layers and linetypes, I just discovered recently that it does bring in line patterns if that particular pattern doesn’t already exist in your Revit file (which is pretty much every pattern except solid/continuous). This is how you keep CAD junk out of your Revit model, right? You have many settings to adjust when linking a DWG file.You’ve been told to ALWAYS link a CAD file into Revit, never import and DEFINITELY never explode. Link CAD is better: it loads the latest version of the DWG each time you open Revit and is more efficient to manage the files. It makes your model heavier, causing performance issues. You will notice that there is two options to bring the DWG file: Import and Link. Now that your DWG file is ready, you can bring it to Revit. Save the modified file in a Revit "CAD Links" subfolder. Use the Setbylayer command to quickly resolve this problem.Ĥ- Freeze Useless Layers: Freeze all layers not required in Revit.ĥ- Save A Copy: Keep the original DWG file just in case. Open the Xref dialog box and bind them all, preventing duplicate layers.Ģ- Run "Purge": This removes unused layers, linetypes, blocks, etc.ģ- Run "Setbylayer": All lines settings should be set to layers, ignoring any color, linetype or lineweight overrides. 1- PREPARE CAD FILESĪny CAD files linked into Revit must follow a careful process:ġ- Bind XRefs: Xrefs can cause problems. Following these tips should help you avoid a lot of problems. Sadly, we don’t live in that world yet so we have to deal with consultants and friends that send us CAD files we have to integrate in Revit. A lot of people don’t really know what they are doing when they import CAD into Revit, resulting in chaos and poor management. In an ideal world, no one would use CAD, ever.