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Edit: I found the merge checkbox on the array modifier (whoops.) But the alignment problem is still interesting...

So, let's say I'm following yet another tutorial from the blender Guru, how to create a spaceship corridor. This thing is a beast.

So we start with modeling a quarter of the ship, since it is all nice an symmetrical. Like so: enter image description here

We proceed to mirror it into something that looks a bit nicer: enter image description here

Great! Then, the guy simply adds a plain to act as the bottom. Simple enough! enter image description here

And Viola! We hit CTRL + J and expect the the object to join that which is being mirrored. Unfortunately, I can't seem to align it right. I'm exaggerating for clarity, of course, but I get either:

enter image description here or something like: enter image description here

I can't seem to figure out a way to alight this in a reasonable amount of time so that the edges actually touch each other. As you see, when I am seeing the "Array" modifier, it makes no effort to weld the pieces of the array together, instead just putting the "pieces" as close together as possible with no overlap. Therefore, the floor has to be exactly the same size as the original mirrored piece! I can't seem to make this happen!

Thank you very much to anyone who can tell me how this can be done properly!

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  • $\begingroup$ Have you tried adjusting the array distances? $\endgroup$ – Scalia Nov 13 '14 at 15:54
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Joining your objects changed the plane's bounds, using the corridor's bounds. Array modifier is using the object's bounds as a reference (1) for the relative offset. The bounding box can be visible, it's a box containing your complete object.
enter image description here

Your plane is smaller than the bounding box, so it's repeated inside it. You need to fix it's topology to fit the bounds of your corridor.
enter image description here

To do this, activate vertex or edge snapping
enter image description here

Move the needed vertices/edges along 1 axis (Y on my sreenshot) with G, and X, Y or Z. The mouse cusror will change when close to a vertex/edge it can use to snap
enter image description here

Do the same on the other side
enter image description here

Now your plane will fit the corridor's array. enter image description here

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