Print Calibration Page

Print this page once, with a real ruler nearby, before trusting any Board. It checks your printer/browser prints CutDone at true physical size instead of silently rescaling it.

• Print at 100% / Actual Size — turn OFF "Fit to page" / "Scale to fit" in the print dialog.
• Turn off headers & footers — your browser's print dialog usually calls this "Headers and footers".
• Measure the 100mm ruler line on the printout with a real ruler — if it isn't exactly 100mm, your print settings are still rescaling.
• Check the dashed safe margin box isn't clipped by your printer's unprintable edge.