There's been some videos where you can ablate completely black spray paint
with a CO2 laser.
The solder mask stuff is different because there's no way it's coming off.
It's chemically bonded to the copper according to thermark.
On Wed, Oct 28, 2009 at 11:59 PM, Stefan Trethan <stefan_trethan@...>wrote:
>
>
> This is like the second law of thermodynamics - In the end you will
> always end up with thermal transfer ;-)
>
> Anyway, if it is more precise then that's good, but you wrote
> initially one has to remove the material between traces after cutting
> with the laser. Isn't this weeding very time consuming with complex
> boards? Isn't there a danger that the trace material is lifted away
> too?
>
> I wonder what would happen if you coated the PCB with toner or
> stereolithography powder. Could you burn on the pattern and blow away
> the remaining dust?
>
> ST
>
>
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