Set print scale to 100% / Actual Size
Windows Print → More Settings → Scale → Actual Size
Mac Print → Scale → 100% (NOT Fit to Page)
Wrong scale will shift the cut lines.
Auto-duplex setting:
In your printer's settings, choose "Print on both sides, long-edge flip" (sometimes called "long edge binding"). This is the standard default — short-edge will print the back upside-down.
Heads up:
A single 2-page PDF will open in a new browser tab — page 1 is the front, page 2 is the back. Both pages render upright. You handle the printing, paper flipping, and any duplex settings yourself.
⚠ Need to Print in Color?
Most office printers default to Black & White. Make sure Color is selected in your print settings.
If you don't see a Color option:
Click "Print using system dialog" or press Ctrl+Shift+P
Then look for a Color setting in your printer's settings or preferences.