Use the Keepout layer to determine the size of the line:
Follow the steps in the diagram:
1. Select the corresponding tag of the menu bar
2. Select "Place lines" and draw line options
3, in the black area of the PCB project can be drawn line
Now the line you draw is in the keepout layer, the line is pink!
The boundary of the line is the boundary of the board
"If you draw a line that is not pink, you need to re-select the Keepout layer!" 】
Make the PCB drawing within the boundaries you specified above!
In the pink wireframe.
Cutting the PCB interface
This time you will find that your black area is still so large that you can crop the layout at this time
Cut out the extra black area outside the board boundary!
The first step:"Select the entire Layout", press CTRL + A to select, or drag the mouse to select
Step two: Select "Design", "Board Shape", "Define from selected objects"
5, modify the completion!
Altium Designer Tips: [5] How to determine the PCB board size