Universal Laser Systems X2-600 - Manual (Page 75)

Sample Materials 6-11
COMMENTS
The manufacturing processes for coated brass varies from one vendor to another. Some manufacturers
do not polish the brass before coating it. Since CO
2
lasers at this power level do not engrave into metals
when the coating is removed, the tarnished brass underneath will have a dull appearance that will need to
be polished with a brass polishing compound. This type of brass is designed for mechanical engravers
that actually remove the metal when engraving which gives the brass a shine without polishing. Brass
that is produced for the laser engraving industry is polished, then clear coated, and finally coated with
paint. When laser engraving this type of material, adjust the power so that the laser beam removes the
painted coating but not the clear coating. This will expose the polished, clear-coated brass without
penetrating all the way down to the metal. Since the brass is already clear coated and polished, it will not
require any cleanup after engraving nor will it ever oxidize. If too much laser power is used, the brass the
clear coat will be removed and the brass underneath will be exposed to the heat of the laser beam
causing instant tarnish. If polishing the brass, use a soft, non-abrasive cloth or tissue (not paper towels)
and good quality brass polish. Do not rub too hard, as this will scratch the painted coating.
DO NOT ATTEMPT TO ENGRAVE DEEPLY OR CUT THIS MATERIAL WITH THE
LASER SYSTEM. High Power and low Speed settings can cause the laser beam to
reflect off of this material which can damage the laser system and can be a safety
hazard. Damage caused by this type of abuse
WILL NOT be covered under warranty.