You asked: What is the difference between overlay and attachment in Revit?

When linking a Revit model, Revit gives two options: Attach or Overlay. This defines the visibility of nested models (models linked to the link) in the main model. Attachment loads nested linked models and displays them in the project, Overlay only loads the linked model (and not the ones linked into it).

What is difference between attachment and overlay?

Attachment: Saves a copy of the xref drawing in your drawing. Overlay: Creates a link to the xref drawing in your drawing.

How do you overlay models in Revit?

Show or Hide Nested Models

  1. Open the parent model to which the nested model is linked.
  2. Click Manage tab Manage Project panel (Manage Links).
  3. In the Manage Links dialog, click the Revit tab.
  4. In the Reference Type column, change the value for the linked model to one of the following: Attachment. …
  5. Save and close the file.

How do you reload a linked file in Revit?

To correct this situation, reload the linked file. In Revit Architecture, click Manage tab Manage Projects panel Manage Links. In the Manage Links dialog, on the CAD Formats tab, select the linked file in the list, and click Reload. Click OK.

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How do you make an overlay xref?

To Overlay an Xref

  1. Click .
  2. In the Select Reference File dialog box, select the file you want to attach and then click Open.
  3. In the External Reference dialog box, under Reference Type, select Overlay.
  4. Specify the insertion point, scale, and rotation angle. Click Specify On-Screen to use the pointing device. …
  5. Click OK.

What is an xref overlay?

An overlaid xref does not load or bring with it any nested xrefs. For example, if you xref “A” into your parent drawing, which contains a nested xref, drawing “B”, only drawing “A” will be referenced in. Drawing “B” will not be loaded into the parent drawing because it is a nested xref.

How do I use underlay in Revit?

Create an Underlay

  1. In the Project Browser, open a plan view.
  2. On the Properties palette, for Range: Base Level, select the level you want to underlay. Range: Top Level is automatically set to one level above the Base Level. …
  3. On the Properties palette, for Underlay Orientation, select Look Up or Look Down.

How do Revit Worksets work?

When you make a workset editable in Revit, you are taking exclusive ownership of all objects in it. Only one user can exclusively edit each workset at a given time. All team members can view worksets owned by other team members, but they cannot always make changes to them.

How do I open a linked Revit model?

Right click on the link you want to edit. Select Open (and Unload). (This will open the model safely in the same session of Revit.) Make the changes you want then save and sync the file.

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How do you unload a linked Revit model?

Unload linked models to temporarily remove them from the project.

  1. Click Manage tab Manage Project panel (Manage Links).
  2. In the Manage Links dialog, click the relevant tab.
  3. Select the linked model.
  4. To unload the selected model, click Unload.

How do you refresh a model in Revit?

When working on a workshared project, you can see the changes that other team members have made to the project after they synchronize with the central model. You can load updates from the central model without publishing your changes to the central model. Click Collaborate tab Synchronize panel (Reload Latest).

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