Allow 5 minutes to dry.
Laser engrave on top of coating.
When heated by the laser the coating fuses to the metal, creating a very dark marking, which is abrasion resistant and highly visible. The excess material can be rinsed off with water and is non-toxic. Higher powered lasers allow faster speeds and decrease job times. Actual results may vary. Brass is very difficult to mark and the only metal that cannot be used at all is gold.