I have an OMTECH K40+ CO2 laser and want to put a logo in gold or brown color on cardboard display boxes. What do I use for the color?
thank you,
Ray
A CO₂ laser burns cardboard, so the resulting color will be whatever the ash looks like.
This was on random white cardboard:
The settings will depend on your laser and material, but that was with low power and high speed.
If the result is intended as customer-facing / presentation-quality packaging, the engraving will emit an obvious and pervasive burned-wood stench for several days.
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You can experiment with powder coat paints and no air assist.
I did say EXPERIMENT, right? 