| Deep Engraving | Multiple passes over an area to achieve extra deep results. This is sometimes necessary due to the hardness of material and/or needing the depth to hold paint.
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| Depth of Field | Refers to the area that is between the focal point and the point where the laser meets the substrate on which it is engraving. This is the area that contains the densest laser energy and is most efficient for engraving. |
| Double Pass | The process of running a job twice over the same area to achieve desired results.
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| Downside Exhaust Work Support Table | An option that will hold parts up off of the reflective aluminum table top, as well as hold parts flat. In addition, smoke, vaporized materials and fumes will be pulled down and away from the point of burn. Drivers - Computer disks that are provided with the machine that allows the computer to interface with the laser engraving system.
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| DPI | Dots per inch of engravable artwork. Most jobs are run at 300 -600 dpi's, but systems do allow for settings as high as 1200 dpi. The higher the dpi, the slower the machine will run.
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