TechDraw FaceCenterLine

From FreeCAD Documentation

TechDraw FaceCenterLine

Menu location
TechDraw → Add Lines → Add Centerline to Faces
Default shortcut
Introduced in version
See also
TechDraw 2LineCenterLine, TechDraw 2PointCenterLine


The TechDraw FaceCenterLine tool adds a centerline to selected faces.

Centerline added to a face

Usage create

  1. Select one or more faces in a View.
  2. There are several ways to invoke the tool:
    • Press the Add Centerline to Faces button.
    • Select the TechDraw → Add Lines → Add Centerline to Faces option from the menu.
  3. A task panel opens. See Options for more information.
  4. Press the OK button to confirm.
  5. A centerline is added at the midpoint of the bounding box of the selected face(s).

Usage edit

Any of the centerline tools ( TechDraw FaceCenterLine, TechDraw 2LineCenterLine and TechDraw 2PointCenterLine) can be used to edit any centerline.

  1. Select a centerline.
  2. Invoke a centerline tool.
  3. A task panel opens. See Options for more information.
  4. Press the OK button to confirm.


  • Orientation:
    • Vertical: Forces the centerline vertical. Ignored for 2PointCenterLines.
    • Horizontal: Forces the centerline horizontal. Ignored for 2PointCenterLines.
    • Aligned: Not available for FaceCenterLines. Forces the centerline to follow the general direction of the selected edges for 2LineCenterLines. Ignored for 2PointCenterLines.
  • Shift Horizontal: Moves the centerline left or right of its normal position.
  • Shift Vertical: Moves the centerline up or down from its normal position.
  • Rotate: Rotates the centerline around its midpoint (degrees. + counterclockwise, - clockwise).
  • Extend By: Makes the centerline longer by this amount.
  • Color: The color of the centerline.
  • Weight: The width of the centerline.
  • Style: The linestyle of the centerline. The options are:
    • Continuous
    • Dash
    • Dot
    • DashDot
    • DashDotDot


  • To delete a centerline use TechDraw CosmeticEraser.
  • FaceCenterLines will eventually replace two View properties:
    • ViewHorizCenterLine: Show a horizontal centerline through view.
    • ViewVertCenterLine: Show a vertical centerline through view.


Centerlines have no properties of their own, as they are not document objects.