Mirroring a mesh across the origin I made a path based on a background image, which is the peace sign. Now I've created a path and then turned into a mesh using Alt+C.

Since the sign is symmetrical I'd like to mirror this piece of mesh using the mirror modifier and make a separate mesh, which in turn will be moved along the x-axis. The overall goal is to use the knife project to carve a disk and eventually make the peace sign.

One of you guys here in SE has suggested going into edit mode and selecting vertices. That's not possible in here since the mesh is irregularly shaped from the path.

How can I make a separate mirrored shape?





As you can see, Blender is creating one mesh.
The problem is that your object's origin is in the middle of your object. The Mirror Modifier uses the object's origin to mirror from, so you need to do one of two things. 


Either set the origin of the object to your 3D cursor 
Or add an Empty to the center of your scene, and select it in the Mirror Object option in the Mirror Modifier to mirror from the Empty's origin