Основы Blender, чтобы показать, как зеркально отображать объекты в Blender. Надеюсь это поможет. #blender #b3d #cgian
Смотрите здесь, https://cgian.com/2023/10/blender-mirror-object
Hey artist.B, thanks for sharing.
Since BlenderArtists.org is an English language forum, it’s best (and even site policy, I think) to make your posts in that language.
Otherwise most of us aren’t going to know what you’re talking about. I noticed that the page and video you link to are in English, so that’s helpful! 
Check it out if you’re going to perform this operation make sure to use file-clean-up you may leave behind objects and shape keys in your blend file that won’t show up otherwise. May not allways be the best method.
I recently figured out I can mirror shape keys by -creating a duplicate - adding a mirror modifier- deleting the shapekeys from the duplicate - deleting the original half- object mode - right click object origin to geometry - (shift s)snapping menu - 3d cursor to object origin - at this point you can put a empty object there if your not ready to mirror - next duplicate the original object with all properties and shape keys- snap selected to 3d cursor (if you misplaced the 3d cursor use the cursor to selected on the empty first)- right click -mirror - global or local mirror and axis depending on your project.
The tricky part is merging but this method should place the vertices so all you need to do is put auto-merge and move the mesh .01 or whatever next hit the auto-merge button (make sure you use “flip to bottom/flip to top function on the overhead toolbar if using blender 2.93.7 to access auto-merge) and the same amount back .01 or whatever. Next turn off auto-merge. And that should work. Assuming you need to merge you two halves of course.