How do you "unjoin" meshes?

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1

I used the join command on several meshes, but now I want to separate them. I cannot find an inverse to the CTRL-J join command.

2

Just select the piece you want to separate, and press P, for seParate.

Matt

3

Go into edit mode, press A to select all vertices, or select a single vertice from the object you want to seperate, and press ctrl L to select the rest of the attached vertices, and then depending on which one you did, you can pres P for either seperate all loose parts, or seperate selected. This is for the latest version, other versions donā€™t have ā€˜seperate all loose partsā€™.

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4

Good, that works in edit mode. If you are not in edit mode, pressing P gives a message that the game engine is disabled.

5

You must be using a version greater than 2.25. After that version the gameengine parts of blender were taken out. P Key was the key to start a game.

6

Waaayyy after the post, but I am fascinated with thisā€¦
I made 3 copies of a mesh (a small wheel hub). I used the Join command to link them together. (Why canā€™t it be GROUP/UNGROUP?)

Okay, I want to undo this joining thing, so following your advice, how am I supposed to ā€œjust select the pieceā€¦ā€? If I select, all 4 pieces are selected.
:o

So- with all 4 pieces selected, I press P, and Blender hangs up!! %|

Question: Does this work for some of you, and not for others?

Iā€™m using V2.36 on a stupid PC, but at least I have FireFox! :-?

7

Select your 3-object object and go into Edit mode. RMB-select just 1 vert from the subobject you want to seperate (one of the 3 wheels). With your mouse cursor over that vert hit L and all the verts of that subobject should be selected. Press P to seperate it. It will go black. Rmb-select it and give it a new name in F9.

%<

8

After selecting your mesh, hit the Tab button to go to edit mode. then press the P key and choose All Loose Parts.
If you donā€™t wish to use join, you could use Ctrl P to parent other meshes to a main mesh. Then you could move, scale or rotate the main mesh and the child meshes would follow suit. But you could still manipulate the child meshes independently.

9

Tried this, but not working for me. I wonder if itā€™s a glitch with my graphics card, which would not work with previous versions of Blender- (Iā€™m using latest).

I have 4 objects which I joined with Ctrl-J, and canā€™t seem to get back apart.

You say ā€œGo into edit modeā€¦ā€ Do you mean open the model file, and go into Edit mode without selecting anything?
I have several objects on a few different layers. On the layer Iā€™m working with, there are other objects besides the joined parts Iā€™m having trouble with. I go into edit mode, and the 4 objects highlight themselves! I wonder if itā€™s because thatā€™s the last group I was working with?
Iā€™ve tried the various Lā€™s and Pā€™s with no success.
One thing Iā€™ve found NOT to doā€¦ Donā€™t do ā€œPā€ā€¦ System hangs every time [!]

If I could get my wish on the Blender Wish List, Iā€™d wish for an easier way to undo a Join.
I guess I can delete the vertices to the 3 copies I made, and make more, but thatā€™s kind of crude. :expressionless:
I do have a feeling it has someting to do with my system characteristics.

EDITINGā€¦ I went back and put the 4 troublesome obects into a separate blend file (using append).
VIOLA!! I separated them!! I think my problem in the main model file has something to do with multiiple layers, or ???

10

Pressing P in object mode doesnā€™t hang Blender, it starts the game engine. Just hit Esc to exit it.

Martin