Object disappears when I Set Origin To Center of Mass

I recently mirrored a couple of objects and deleted one of the duplicates, but now when I try to set the origin to center of mass, the object disappears. I also get strange values in my location and dimensions window. This only happens to the objects I mirrored (and deleted one of the copies).

I also attempted to apply rotation and scale, and still my object disappears. Would anybody have an idea what I’m doing wrong?

Before Setting Origin To Center Of Mass

After Setting Origin to Center Of Mass

Try using blender 2.69RC3 http://download.blender.org/release/Blender2.69/

Your object didn’t disappear… You made it implode. Look at its position and its negative dimensions. :wink:

More seriously, look over there: http://www.blenderartists.org/forum/showthread.php?315320-The-Ghost-Mesh

Same problem, same solution.

EDIT: And Richard beat me on the finish line…

Thanks guys. Just downloaded the new version of Blender, and thankfully the object doesn’t implode anymore. Nonetheless, the origin point is far away from where it should be. I might have to model those pieces again, or just place the origin point somewhere in the middle using CTRL+S.

I’m suspecting it has to do with with the fact that I deleted one of the mirrored objects. If Blender notes which object was the original, than that’s the one I deleted. Is there a right way of turning mirrored meshes into separate objects?

For those of you running into the same problem, I found out what I was doing wrong and how to avoid it even when using previous copies of Blender. I’m using Blender 2.68a.

When I mirrored my object and applied the modifier, I immediately deleted one of them by just deleting its faces, verts, and edges. What I should have done was: after applying the mirror modifier, select one of the objects in edit mode, press L (Select Linked), press P and separate the selection.

That will create a new object and setting the origin to the center of mass won’t be a problem even running 2.68a. Probably a classic newbie mistake, but we all learn sometime :slight_smile: