Start with the constant-power test pattern:
Set it up on six LightBurn layers:
With useful scanning speeds and powers:
Unleash the laser on a scrap of fluorescent green acrylic:
Measure the distance between successive line ends at each speed, divide by two, then fill in the offset adjustment table:
Burn another scrap:
That looks better …
Not incidentally, it also provides illustrations for an upcoming Digital Machinist column about small-scale engraving-as-machining and why good scanning compensation matters.