Universal Laser Systems Laser Platform M-300 Guide de dépannage télécharger pdf (Page 68)

Sample Materials 7-7

COMMENTS

Engraving mirrored acrylic is similar to engraving regular acrylic. The idea is to engrave through

the mirrored backing enough to begin to penetrate into the acrylic. Engraving deeply will cause

a crusty residue to form just like with non-mirrored acrylic. A double image will appear if

engraving on the front side of the mirror. It is not necessary to mask the backside when

engraving because the mirrored backing shields the acrylic from smoke damage. To cut

mirrored acrylic, it might be necessary to remove all original masking, re-mask with transfer

tape, and dampen the tape with water from a spray bottle. Next, place the acrylic in the laser

with the mirrored surface facing upwards and elevate at least 1/2 inch above the table. The

laser beam will not reflect off of the mirrored surface because it is absorbed by the acrylic first.

Sometimes cutting the acrylic from the backside will cause the mirrored backing to distort and

crack from the intense heat required to cut. If the combination of engraving and cutting is

desired, our suggestion is to engrave the backing, unmasked, remove the acrylic, mask both

sides with transfer tape, flip the acrylic over, dampen, elevate, re-focus, and cut from the front

side. When paint filling the engraved area, make sure to use an acrylic-based paint or paint that

does not contain acetone or alcohol, as these chemicals will crack the acrylic. Water based

paints also work very well. Since the mirrored backing serves as a masking, it is not necessary

to mask the backside before engraving.

WARNING: Acrylic is extremely flammable. NEVER leave the laser

system unattended when cutting or engraving.

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Universal Laser Systems Laser Platform M-300 Guide de dépannage Page 68