You can identify a shared part or assembly by its icon in the Structure Browser. Unshare parts and assemblies at any time with the Unshare button in the Part & Assembly group on the Structure tab. This creates independent parts or assemblies, each with its own data structure.
A part becomes shared as a result of the Share command or when a user chooses Copy using the One Level option.
By default, the system will break the share between the selected assembly and any others like it. No new shares will be created for the structure below. As a result, the complete tree becomes completely isolated. But note that shares within the selected assembly remain. That way, you can isolate the assembly to create or modify a new, independent assembly without impacting any other parts of your model.
With the One Level option on the Unshare dialog box, you unshare only the share you no longer wish to maintain. Unsharing an assembly one level leads to a new independent assembly with the same shared substructure. Sharing will be transferred from the assembly to its direct elements. Use this, for example, when you want to create an assembly with the same shared parts, but with variations due to different positions within the assembly
1. Click Structure and then, in the Part & Assembly group, click Unshare. The Unshare dialog box opens.
2. Select a part or assembly to change:
◦ Double-click the part or assembly in the Structure Browser or
◦ Click a part in the viewport or
◦ Type a part or assembly name.
3. If you want to unshare only one level in an assembly structure, select One Level.
4. Click Rec.Share to ensure that the unshared parts retain sharing between them. By default, the Rec.Share checkbox is not selected.
For example, as shown in the following images,
◦ If you unshare the two table legs, with Rec.Share selected, then the sharing is retained between the two legs. The two legs are unshared from the tablelegs assembly as shown in the Structure Browser.
◦ If you unshare the two table legs, with Rec.Share cleared, then the sharing is not retained between the two legs as shown. The two legs are unshared from the tablelegs assembly as shown in the Structure Browser.
Unshare. The Unshare dialog box opens.
to complete the operation.