Set your PCB canvas **Units** to `mm`;
Select and make visible the **Board Outline** layer;
Select **Track** from the PCB Tools palette (or use the 'W' Hotkey);
Then draw your outline noting the XY co-ordinates of the starting point;
To ensure that the outline is a closed polygon, make sure that the **last** point of the outline has exactly the same XY co-ordinates as the **starting** point.
![enter image description here][1]
[1]: /editor/20151207/5664766e4bd8f.png
Ok, I created the board outline as you described above. When I do auto router I get "not a valid PCB" and "please create board outline first"?? FYI . . . The outline is in red!
Hi,
I am sure you are not create a real board outline , it is not red, red is top layer. it is pink.
https://easyeda.com/Doc/Tutorial/PCB.htm#Board-Outline
![enter image description here][1]
[1]: /editor/20151207/5664cb7b93f08.png
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