duplicate block with new name

[jdfnnl]

The goal is to duplicate a single instance of a block and with a new name without having to delete and replace the original. Is there any way to duplicate an existing block with a new name?

[Michiel.Valcke]

make a new block, with the new name, insert and explode the old block. Save the new block definition. Now you'll have 2 block definitions with different names but with the same geometry/attributes. 

This will not work with dynamic blocks. You could do the same with two autocad drawings, in one you open the original block in the block editor, and with the other you open the new (empty) block in the block editor. You can use the copybase command to copy everything from one block editor to the other.

[cadffm]

In Architecture it should be 8ffered in your context menu,

but not in AutoCAD.

You need a tool to do that, like this <click>

[paullimapa]

Use the Wblock command and select the block using the Block button and save that into a folder on your computer and then use Windows Explorer to select and rename the dwg in the folder as another name then Insert that back into your drawing. Now you have two different named blocks but with exactly the same content in the same drawing 

[Kent1Cooper]

You can use the BDN command in BlockDupNewName.lsp, >here<.

[andkal]

In Autocad MEP there is a commnad for this: COPYBLOCKDEFANDASSIGN.
If you use one of Autocad verticals you can check if you have such a command.
I 'm not sure if it exists in normal Autocad.

[AVCPlugins]

Especially for this case, the AVC Assembly plugin has the AsmNew command.