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I have a component which has a cavity on the bottom (the side that meets the top of the PCB). How can I create a keep out region which spans the outline of the component, excluding the cavities?

Illustration of keepout

I tried using primitives for the outline shape and the cavities, marking them and using tools -> convert -> create region from selected primitives. What happened was I only got a region that spanned the entire outer layer.

Any easy way of achieving what I want?

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    \$\begingroup\$ Can you draw it up from 4 separate rectangles or a polygon? \$\endgroup\$
    – Jeroen3
    Commented Jun 24, 2022 at 13:03
  • \$\begingroup\$ I think this article of the Altium documentation could help: altium.com/documentation/altium-designer/… \$\endgroup\$
    – Dario Casciato
    Commented Jun 24, 2022 at 13:13
  • \$\begingroup\$ @jeroen3 the cavities are not actually rectangles, otherwise that would be the solution I would have gone for. \$\endgroup\$
    – Frey1337
    Commented Jun 24, 2022 at 17:37

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I have done this for a polygon pour, hopefully you can use a similar strategy for your problem. You can achieve this with: Right Click > Place > Keepout > Track.

  1. Draw your polygon pour.
  2. Draw a keepout track for the outer perimeter of your desired keepout region making sure it connects back to itself. This will form a 'keepout barrier' that will prevent the original polygon pour from filling the inside.
  3. Draw a new polygon pour on the inside of your 'keepout barrier'.

Keepout region with hole in it

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