Use Your Browser's Print Function:
- Switch to the PCB layout view in Flux.
- Use your browser's print option (usually via File → Print or Ctrl+P).
- In the print dialog, choose “Save as PDF.” This will capture your current PCB view.
Export Manufacturing Files:
- You can export your design as Gerber files, which are the industry standard for fabrication, and then use a separate tool to compile these into a PDF if needed.