This add-on makes it easy to quickly cut and mirror mesh objects.
Open Blender and go to Preferences then the Add-ons tab.
Click Mesh then Auto Mirror to enable the script.
In Object Mode, select the object you want to mirror.
Choose settings from the Auto Mirror panel in the.
Press Auto Mirror and depending on the settings, your object will be in Edit Mode, with mirror set up for you.
Super fast cutting and mirroring for mesh.
This add-on is bundled with Blender.