About line width of CO2 Marking machine


About line width of CO2 Marking machine.

I have Cloudray 30W LiteMarker Laser Engraver CO2 Marking Machine (210 x 210mm).
(This is galvo type machine.)

When I test, the line width is about 0.6mm.
This is large than my expect.
Is this normal?

I can’t write small letters because the lines are thick.
Is it possible to adjust?

I tried various material, But same result.

Thank you.

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