TinderBox (UK) said:sombody mentioned sink unblocker will remove HAIII, I dont know what type.
regards.
John.
I found it really interesting that the bright white we see right after laser engraging is not just exposed aluminum. If that's the case you could speed up the process of the 'white powder' falling off by just hitting new laser engraving with something like a bronze bristle brush (or something else that wouldn't put too much wear and tear on the surrounding anodizing). You could then either just wait for the exposed aluminum to tarnish (and fade against the black finish) or you could use something like BIRCHWOOD CASEY Aluminum Black on the newly exposed metal to knock it down right away."... The white color is the highly fractured ceramic surface touched by the laser. Over time, the white powder will rub off leaving tarnished aluminum, which is a dull gray. ..."