Using and Resizing Rectangles
Thought for 27 sec
This is the most relevant entry I found related to your question:
Flux has built-in support for simple shapes (circular and rectangular). For complex shapes, please refer to the section on Advanced (custom) shapes.Changing the Outline ShapeShape Not Updating
If your board shape isn't updating after changing settings:Verify that you've selected the correct "Layout" object in the Objects tab
Make sure you've added the rule correctly through the Object-Specific Rules menu
Try refreshing the view by zooming in and outSize Constraints
If you're having trouble with board dimensions:Ensure you're using the correct units (mm, in, or mil)
Check that your dimensions are reasonable for PCB manufacturing (typically between 5mm and 500mm)
Verify that there's enough space for all components and traces
If you want, I can also help you with the exact Flux steps for switching your current layout to a rectangle and setting a specific width/height.
Set board rectangle
Resize current board
Change layout shape
