Replacing Blocks

[step997]

Is it possible to replace existing Blocks in autocad with a newer version of the block? I want to retain to position of the Block but update it with the newer version, is this possible?

Any help much appresiated!

[VERYCIVILDRAFTER]

In ALL autocad versions you can redefine the block this way -

1 - copy a block off to the side
2 - set rotation at 0 and scale at x=1 y=1 z=1
3 - mark the insertion point (i draw a line from insertion point and off to the side)
4 - explode block
5 - change exploded entities as needed
6 - create a block using the same name (as the original block) from the modified entities
7 - when autocad asks REDEFINE BLOCK? pick YES
8 - all hopes and dreams are realized


Newer versions of autocad -

1 - Double click any one of the blocks
2 - click okay
3 - modify block entities as desired
4 - Pick the save changes button
5 - all hopes and dreams are realized! :)

[Mark Kenyon]

Select block,
Type in BEDIT, (should default to the one selected)
Modify the geometry to suit,
Close block editor. and accept "YES" If you want to keep the name the same and all blocks will update when complete.
If you want to create one almost identical with minor changes do the same thing except in the upper left hand corner of the block editor select the "save as" button and key in a new name, then close the Block Editor.
Then on the command line key in the command "blockicon". To update all your block icons just right click to accept the (*) shown. You can then use Design Center to access your new block(s).

[nick bessey]

I had a similar need but it was to replace many (400+) instances of a block called 1 with a different symbol block called 2. If you create a new block called 2 as reqd, the create(redefine) the block called 1 you can then explode all instances of 1 and your drawing is then full of 2s!: confused: it does make sense if you try it honest.