Since I am using Xrefs in almost every project I think that Xrefs deserve special attention, so in next few posts I will try to explain everything you need to know about them.
In the first post we are going to look at What exactly is an Xref.
Xref or external reference is drawing file which is inserted in your current drawing. It behaves as one and Xref’s objects can’t be easily edited (by mistake) in the current drawing. As you can see in the picture when we select part of an Xref it will glow as one object.
With Xrefs, changes made in the referenced drawing are reflected in the current drawing.
Any changes will be displayed to the current drawing when it is reopened or if you reload the Xref. Attached drawings are linked to, but not actually inserted in the drawing there for our current drawing stays light without significantly increasing the drawing file size.
Why should we use Xrefs?
There are a couple of very important reasons why we should use external references:
- As mentioned before Xrefs keeps the file size down.
- They allow many users to work on individual components of a projects.
For example: We have our house outline and we can use it as an X-ref for our furniture plan, water and sewer plan, electrical plan, etc. That way if correction is made to outline it will be automatically applied to all other drawings.
Another example: If we have big project like building power plant road designers can attach land survey, Architect plans etc. for reference while they are designing the roads. In the same time landscape architect would attach roads into his drawings while he is designing the landscape and so on.
- You can Xref drawings that they themselves reference other drawings – this is called nesting and is great for keeping an eye on multiple drawings at the same time.
- Xrefs can be added, unattached, updated, reloaded and clipped in the main drawing at any time – that way we have full control over them.
- We can control Xref’s layers in current drawing without affecting the reference drawing.
- If someone make a correction in referenced drawing and forget to tell you, it will automatically appear in your drawing that way mistakes can be avoided. (Corrections will appear after reopening the drawing or reloading the Xref. Don’t worry you will be notified if you need to reload your current drawing)