What is TroGlass Mirror?
TroGlass Mirror is the first extruded laser acrylic available from Trotec. Featuring a reflective surface. TroGlass Mirror is the perfect alternative for glass thanks to the many advantages it offers, including a higher resistance to breakage and lighter weight than glass. This makes the material ideal for applications such as signage, as TroGlass Mirror has a lower risk of falling and breaking when mounted on a wall. The material base consists of extruded engravable acrylic glass with a very small thickness tolerance.
As TroGlass Mirror is engravable acrylic-based, the laser cutting parameters for standard TroGlass sheets can be used as the starting values to determine the optimal processing parameters.
TroGlass Mirror is very easy to process with a fiber laser source. If you are processing using a Flexx laser, use the flexx lens to cut out the material using the CO2 source after laser engraving.
The grayscale matrix can be used to determine the best laser engraving parameters. TroGlass Mirror is suitable for both front and reverse engraving. The mirror material is very easy to remove from the back. Depending on the lens and details of the graphics, a Z offset of + 3 mm is used.
For processing we recommend a resolution of 500 dpi. You can do the engraving on either the back or front side according to your preference. When engraving on the back, make sure that the graphics are mirrored. If you do the engraving on the front side of the material, we recommend that you do not use a Z offset. As engraving in focus results in the best contrast, turning on the Air Assist allows you to achieve a rich contrast.
An advantage of engraving on the back is that the protective foil of the TroGlass Mirror material remains on the material until the end of processing, protecting the material against damage.
Rapid cooling makes the material appear more matt and whiter.
Laser engraving with a fiber laser source on TroGlass Mirror leads to very detailed and intense engraving results. Use a frequency between 20,000 Hz and 30,000 Hz to achieve these results. Load the material into the laser machine with the reverse side facing up. A Z offset of 1 to 2 mm is recommended when working with TroGlass Mirror engravable acrylic.
When laser cutting we recommend a cutting frequency between 5,000 and 20,000 Hz. The right exhaust system is also very important when processing this material. The better the fresh residue is extracted, the higher the quality of the finished cut, which also results in reduced cleaning requirements.
For optimum cutting results insert two cutting lines: One, that is specified at low power and approx. + 2 mm Z offset. With this cut line, at first only the mirror layer will be removed. Draw the second cutting line next to it (e.g. by using the Contour Tool in CorelDraw) that cuts through the material.
Processing in this way allows you to avoid overheating the mirror layer on the back when cutting, which would damage the coating.