Keeping stacks of punched cards under control is important:

The two on the left fit finished cards and the larger ones fit 1/3 Letter paper raw cards.
The patterns come from boxes.py:
I added a finger slot behind the front opening so I could pick up the whole stack at once:

Admittedly, my “stacks” are nothing compared to the Bad Old Days, but …
The program adds a sequence number in columns 73-80 as a last-ditch effort to ensure the punch pattern matches the print pattern: after a few dozen cards, the digits in the last few columns become recognizable.
The LightBurn SVG layout as a GitHub Gist:
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