Using and Resizing Rectangles
0:27
Reading docs about How do I use a rectangular board shape in Flux and resize it? Explain where to set the layout shape to rectangle and how to change the width and height of the board..
Searching for relevant results.
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
Reviews
1SDv1
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $0.13–$0.28 |
Digi-Key | $0.20–$0.71 |
LCSC | $0.49–$0.69 |
Mouser | $0.50 |
TME | $1.19 |
Verical | $0.20–$0.38 |
Controls
Welcome 👋
Flux helps you build PCBs faster with an AI teammate!
Create your account to collaborate, stay updated, fork your own version, and get instant answers from our AI agent.

AI-Powered Component Placement
Let AI place your components intelligently. AI Placement analyzes your schematic and positions components for optimal routing, signal integrity, and board density.
From Schematic to Layout in Seconds
Skip the tedious manual placement. AI Placement generates a starting layout you can refine, saving hours of repetitive work on every new design.
Works With Auto-Layout
Pair AI Placement with Auto-Layout for a complete AI-driven PCB design flow — from component placement through trace routing, all with one click.