How do I replace one block with another?

[mshearer]

I'm working in ACAD 2008 and have a drawing with multiple blocks (block 'a') that need to be replaced with block 'b'. Is there a command similar to edit/find that I can use to replace the block? I don't want to redefine my block and want to only select certain block 'a' to be replaced, not all block 'a'....

Thanks in advance!

[lpseifert]

Try this...

[StykFacE]

Also try the BLOCKREPLACE command. It's an Express Tool.

[SLW210]

Try Express>Blocks>Replace block with another block (BLOCKREPLACE on the command line).

[mshearer]

Much thanks. Exactly what I was looking for.

[mjm78]

Try this...

Thanks for this!! Had been scratching my head over this one.

[cabanacat]

I'm having this same issue. I need block A replaced with block B but not all of the block A need to be replaced. Express tools does not work and neither does "rblock.zip". Using AutoCAD Mechanical 2011.

[MSasu]

You may check the tool from this thread.

[f700es]

Just make a new block the same name as the old one. All of the old ones will update to the new one. I just tried in r2012 and it worked fine. When you save the block with the old name it will as you if you want to Redefine the block, tell it yes.