Univeral PLS6.75 Laser Engraver

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Available in the Student Machine Shop, the laser engraver is a Universal Laser Systems PLS6.75. It is capable of engraving on glass, stone, plastics, wood, and coated metals, and cutting through wood and plastics up to 1/2" (12mm).


When using the laser engraver, it presents itself to the computer as a generic printer. Most commonly, Adobe Illustrator is used to generate print files for the laser cutter.


Material Engrave Cut (Max thickness)
Acrylic 1/2"
Plywood 1/4"
Delrin 1/4"
Polystyrene 1/4"
Anodized Aluminum x
Powdercoated Steel x


  1. Open Illustrator and create a new file. The size of the document should be 32" by 18", and the color mode should be set to RGB. See Fig. 1 for detailed settings. or
    Open DXF file. Make sure the image was created in Imperial Units or set Scale: 1 Units = 1 [drawing units]. (Fig. 2) Once open, go to File ->Document Setup, and click "Edit Artboards". Make sure the width is set to 32" and the height is set to 18"
  2. Set Line Weight and Object Color. Depending on what kind of cutting or engraving is desired adjust the line or fill color according to the chart below:
    Mode Line Color (RGB) Fill Color (RGB) Line Weight
    Surface Engrave (images, text, etc.) Any (0,0,0) > .1 pt (if
    Through Cut (255, 0, 0) None .1 pt
    Vector Etch (scribe line) (0,0,255) None .1 pt
    No operation (255, 0, 255) (255, 0, 255) Any
  3. Turn on Venting, Filter, Compressed Air, and Printer. See the images below for exact locations of controls for each.
  4. Print file and select material and thickness. Using the system print dialog, click the "Setup..." button in the lower left hand corner of the dialog box. In the next window that appears, make sure that "PLS6.75" is selected as the printer to use, and click "Preferences". This should bring up a red and white dialog window.
  5. Focus Laser.
  6. Start Cut and monitor the laser as it cuts.
  7. Turn off all associated parts except computer.