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Sample Materials 6-9
BRASS - PAINTED
RASTER ENGRAVING
LASER WATTAGE POWER SPEED PPI PASS DEPTH
15 90 80 500 1 .001”
20 68 80 500 1 .001”
25 54 80 500 1 .001”
30 45 80 500 1 .001”
35 38 80 500 1 .001”
40 34 80 500 1 .001”
45 30 80 500 1 .001”
50 27 80 500 1 .001”
VECTOR ENGRAVING
LASER WATTAGE POWER SPEED PPI PASS DEPTH
15 20 4.0 1000 1 .001”
20 15 4.0 1000 1 .001”
25 12 4.0 1000 1 .001”
30 10 4.0 1000 1 .001”
35 9 4.0 1000 1 .001”
40 8 4.0 1000 1 .001”
45 7 4.0 1000 1 .001”
50 6 4.0 1000 1 .001”
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.