This patented laser marking spray is formulated to revolutionize metal marking on uncoated metals like Aluminum, Stainless Steel, Brass, Copper and other metal surfaces.
I used this to mark aluminum using a 22W diode laser. I wasn't sure what to expect, I didn't have any experience with lasers, but it worked surprisingly well. I tried the same job without the spray and it didn't leave a mark to be seen.
To use this I made sure the part was clean and degreased and gave just 1 even coat. It doesn't smell, but of course, do it on a well ventilated area and wear a mask. The laser engraving can be done once the part is dry. After the engraving is done, the remainings of the spray can be cleaned with a rag or paper, no special products are needed.
Please note: diode lasers are not really the kind of laser one should be using to mark/engrave metals, but if you already have one, this might do that odd job. If you're interested in seeing the results I had, have a look at the following video.