Start by selecting the object you want to mirror. Your object will then, by default, be reflected across its pivot point, or Origin. There are multiple techniques for changing the origin of an object with the Set Origin command. Once the Mirror Modifier has been added, you should see a copy of the selected object reflected across the axis you choose, as if being held up to a mirror.
Changes made to the original piece of the mirror will be mimicked on the reflected piece of the mirror, thus speeding up your workflow since you will now only have to model HALF of your symmetrical model. The axis checkboxes tell the modifier over which axis to reflect the object. Different axis can be selected simultaneously for some interesting effects, but typically only one is used at a time. For example, we can use the mirror modifier to create two or four pillars the exact same distance from the center.
Related content: How to center objects, origins and pivot points in Blender. The point we mirror around is the object origin indicated by the yellow dot in the middle, and we mirror in local space. This means that we can move rotate and scale this object and the mirror will follow the object instead of being stuck to the axis of the world orientation. Apart from the mirror axis we also have bisect and flip settings in the mirror modifier. Where geometry crosses the middle line bisect will cut it off and whatever is left on the other side will get mirrored.
The flip toggle will simply flip this around. Further down we have the mirror object. This allows us to mirror across another objects coordinate system. Imagine that I wanted to showcase my mad character modeling skills. In this case I would need some way of mirroring parts of the body across to the other side.
Here I can take the arm and add a mirror modifier to it and set the egg-shaped body as my mirror object. You can see the origin point of the body is in the middle.
This is the point we will mirror across instead of using the origin of the arm that is centered on the arm object. This is a useful feature for any symmetrical model that we want to divide up into multiple objects. The clipping setting will make sure that any vertex that cross from the positive side of the axis to the negative side will clip to the 0 position. In essence, we can only have mesh on one side and the mirror on the other side. This is useful in a lot of cases where we want to model one side of an object that is directly connected to the other side.
This way we know that we only have geometry on one side. The merge setting will merge any vertex that come within the threshold of the 0 line between the positive and negative side of the axis with its mirrored version. Then we have the data subsection. This portion mostly deal with how we mirror textures. I explain this towards the end of the video above. In short though, these options allow us to offset any mirrored UV Map and copy over vertex groups to the mirrored side.
The most common problem is that we are mirroring across the wrong axis. It is easy to think that we may mirror from one side to the other of the axis line. For instance, you may think that mirroring on the X Red axis would mirror like this:. But this is really mirroring on the Y Green axis.
Add a comment. Active Oldest Votes. Improve this answer. Paul Gonet Add the Cylinder Object A that you want to mirror to your Scene. Add an Empty if needed and translate it away from A 's origin and rotate it as the following step will use its local transform orientation and it's global position which is shown here: Add a Mirror Modifier to A 's Modifier Stack setting the Empty as the Mirror Object. Samoth Samoth 3, 2 2 gold badges 18 18 silver badges 82 82 bronze badges.
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