Uneven burn on text

What would cause the text to have a uneven burn? I am using an Ortur OLM3 with their diode 20 watt output laser. This is on a white tile using the NWT method. Maybe to much paint, or not enough paint? Or???

Uneven coating

Thank you, John. I will be more watchful of that.

Try 3 cross hatch pattern thin layers, instead of a thick one

is a pain to prepare but is 90% of the engrave, prep work
Clean → coats > LET DRY… humidity control etc

Thanks Gil. I will try that.

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