SOLVED: Canon iPF670 Paper Sizes Not Showing in Chief Architect on Mac - Simple Fix

[joeypet]

I spent hours troubleshooting why my Canon iPF670 plotter paper sizes (ARCH D, etc.) weren't appearing in Chief Architect's Drawing Sheet Setup on macOS Tahoe 26, even though the driver was installed correctly and worked in other apps.

THE SOLUTION WAS INCREDIBLY SIMPLE:

System Settings → Printers & Scanners → Select Canon iPF670 → Set as Default Printer

That's it! Once I made the Canon plotter my default printer, all the paper sizes immediately appeared in Chief Architect's Drawing Sheet Setup dropdown.

Hope this saves someone else frustration if they have a similar issue.

System: macOS Tahoe 26, Chief Architect X16, Canon iPF670 with CUPS driver v5.56a