Draft Mirror

From FreeCAD Documentation

Draft Mirror

Menu location
Modification → Mirror
Draft, Arch
Default shortcut
Introduced in version
See also
Draft Clone


The Draft Mirror command creates mirrored copies, Part Mirror objects, from selected objects. A Part Mirror object is parametric, it will update if its source object changes.

The command can be used on 2D objects created with the Draft Workbench or Sketcher Workbench, but also on many 3D objects such as those created with the Part Workbench, PartDesign Workbench or Arch Workbench.

Mirroring an object


See also: Draft Snap and Draft Constrain.

  1. Optionally select one or more objects.
  2. There are several ways to invoke the command:
    • Press the Mirror button.
    • Select the Modification → Mirror option from the menu.
    • Use the keyboard shortcut: M then I.
  3. If you have not yet selected an object: select an object in the 3D view.
  4. The Mirror task panel opens. See Options for more information.
  5. Pick the first point of the mirror plane in the 3D view, or type coordinates and press the Enter point button.
  6. Pick the second point of the mirror plane in the 3D view, or type coordinates and press the Enter point button.
  7. The mirror plane is defined by the selected points and the normal of the Draft working plane.


The single character keyboard shortcuts available in the task panel can be changed. See Draft Preferences. The shortcuts mentioned here are the default shortcuts.

  • To manually enter coordinates enter the X, Y and Z component, and press Enter after each. Or you can press the Enter point button when you have the desired values. It is advisable to move the pointer out of the 3D view before entering coordinates.
  • Press R or click the Relative checkbox to toggle relative mode. If relative mode is on, the coordinates of the second point are relative to the first point, else they are relative to the coordinate system origin.
  • Press G or click the Global checkbox to toggle global mode. If global mode is on, coordinates are relative to the global coordinate system, else they are relative to the working plane coordinate system. introduced in version 0.20
  • Press S to switch Draft snapping on or off.
  • Press Esc or the Close button to abort the command.



See also: Property editor.

A Part Mirror object is derived from a Part Feature object and inherits all its properties. It also has the following additional properties:



  • DataSource (Link): specifies the object that is mirrored.


  • DataBase (Vector): specifies the base point of the mirror plane.
  • DataNormal (Vector): specifies the normal direction of the mirror plane.


See also: Autogenerated API documentation and FreeCAD Scripting Basics.

To mirror objects use the mirror method of the Draft module.

mirrored_list = mirror(objlist, p1, p2)
  • objlist contains the objects to be mirrored. It is either a single object or a list of objects.
  • p1 is the first point of the mirror plane.
  • p2 is the second point of the mirror plane.
  • If the Draft working plane is available the alignment of the mirror plane is determined by its normal, else the view direction of the camera in the active 3D view is used. If the graphical interface is not available the Z axis is used.
  • mirrored_list is returned with the new Part::Mirroring objects. It is either a single object or a list of objects, depending on objlist.


import FreeCAD as App
import Draft

doc = App.newDocument()

place = App.Placement(FreeCAD.Vector(1000, 0, 0), App.Rotation())
polygon1 = Draft.make_polygon(3, 750)
polygon2 = Draft.make_polygon(5, 750, placement=place)

p1 = App.Vector(2000, -1000, 0)
p2 = App.Vector(2000, 1000, 0)

line1 = Draft.make_line(p1, p2)
mirrored1 = Draft.mirror(polygon1, p1, p2)

Line2 = Draft.make_line(-p1, -p2)
mirrored2 = Draft.mirror([polygon1, polygon2], -p1, -p2)