Configuring PCB Board Region Object Properties in Altium Designer

Created: 06.11.2020 | Updated: 04.08.2021

Parent page: Board Region

Rigid-flex is under ongoing development; recent improvements include new Board Region and Bending Line behaviors when working in Board Planning Mode in the PCB editor, and the introduction of the Board mode in the Layer Stack Manager. This new feature set is referred to as Rigid-Flex 2, the information on this page is only applicable when working in Rigid-Flex 2 mode.

To switch to Rigid-Flex 2 mode, enable the following options in the Advanced Settings dialog:

  • PCB.RigidFlex2.0 - enables the Rigid-Flex 2 features in Board Planning Mode. Note that in previous releases of Altium Designer this option was called Legacy.PCB.RigidFlex. The behavior has changed along with the name change; enabling the old option restored the old mode (Rigid-Flex1.0), whereas enabling the new option enables the new mode (Rigid-Flex2.0).
  • PCB.RigidFlex.SubstackPlanning - enables the Board view in the Layer Stack Manager.

Learn more about Rigid-Flex Design

PCB Editor object properties are definable options that specify the visual style, content and behavior of the placed object. The property settings for each type of object are defined in the following way.  

  • Post-placement settings – all Board Region object properties are available for editing in the Board Region dialog and the Properties panel when a placed Board Region is selected in the design space.


If the Double Click Runs Interactive Properties option is disabled (default) on the PCB Editor - Defaults page of the Preferences dialog, when the primitive is double-clicked or you right-click on a selected primitive then choose Properties, the dialog will open. When the Double Click Runs Interactive Properties option is enabled, the Properties panel will open. 

While the options are the same in the dialog and the panel, the order and placement of the options may differ slightly.


These controls are used to add or remove the coverlay from the current Board Region. To enable the Add and Remove Coverlay buttons, the Board Region must have a Layer Stack assigned that has the Is Flex option enabled and has Coverlay layers included in its set of layers. 

  • Add Coverlay - Add auto-created coverlay polygons to the selected Board Region.
  • Remove Coverlay - Remove auto-created and manually defined coverlay polygons from the selected Board Region.

Learn more about Including Coverlay on a Flex Region of a Rigid-Flex Design


The  icon to the right of this region must be displayed as  (unlocked) in order to access the location fields. Toggle the lock/unlock icon to change its lock status. 
  • (X/Y) - the X and Y location coordinates of the first vertex placed when the Board Region was created, relative to the current design space origin. Edit to change the X or Y position of the Board Region. Values can be entered in either metric or imperial; include the units when entering a value whose units are not the current default.


  • Name - user-definable name of this Board Region. Naming each Board Region is helpful when there are multiple regions in the design.
  • ​​​Layer Stack - specifies which Layer Stack is assigned to this Board Region. The drop-down list will include all Layer Stacks (substacks) defined in the Layer Stack Manager.
  • Color - click to open a color palette to set/change the color of the selected Board Region(s). Note that color changes are applied to all board regions that share the Layer stack used by the selected Board Region.
  • Priority - the Priority value is used to determine which Board Region is rendered last. Use this when designing a board with a flex region within a board cutout in a rigid region - the flex region must have a higher Priority value than the surrounding rigid region (and the board cutout must trace around the flex-within-cutout region).
  • 3D Locked - check this box to fix this Board Region when folding the board in 3D view mode. Only one rigid Board Region can be locked.

Outline Vertices

This region is used to modify the individual vertices of the currently selected Board Region object. You can modify the locations of existing vertices, add new vertices or remove them as required. Arc connections between vertex points can be defined and support is also provided for exporting vertex information to and importing from a CSV-formatted file (via the right-click menu).

  • Vertices Grid - lists all of the vertex points currently defined for the Board Region in terms of:
    • Index - the assigned index of the vertex (non-editable).
    • X - the X (horizontal) coordinate for the vertex. Click to edit.
    • Y - the Y (vertical) coordinate for the vertex. Click to edit.
    • Arc Angle (Neg = CW) - the angle of an arc that is drawn to connect this vertex point to the next. By default, connections are straight-line edges with this field remaining blank. Click to edit then enter an arc angle as required. Entry of a positive value will result in an arc drawn counterclockwise. To draw a clockwise arc, enter a negative value.
Straight-line edges are used to connect one vertex point to the next. If you would rather have an arc connection, enter a value for the required Arc Angle. Entry is made in the field associated with the source vertex point with the arc being from this vertex to the subsequent vertex below in the list.
  • Add - click to add a new vertex point. The new vertex will be added below the currently focused vertex entry and will initially have the same X,Y coordinates as the focused entry. Click the  to remove the currently selected vertex.
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