How to Prepare Files for Laser Engraving in CorelDRAW

Preparing files for laser engraving in CorelDRAW requires setting up the correct workspace dimensions, assigning specific color profiles, distinguishing between vector cuts and raster engravings using line weights, converting fonts to curves, and optimizing bitmap artwork. Following a standardized setup ensures your laser cutter interprets cutting paths and engraving areas accurately, preventing ruined materials and production errors.

1. Set Up the Document Workspace

Open CorelDRAW and create a new document with the following parameters:

  • Color Mode: Set the Primary Color Mode to RGB. Laser controller software (such as JobControl, LightBurn, or RDWorks) maps laser power, speed, and operations to standard RGB values.
  • Page Dimensions: Set the width and height to match either the exact dimensions of your laser machine's bed or the specific dimensions of the material you are using.
  • Resolution: Set rendering resolution to 300 DPI to ensure high-detail raster graphics.

2. Configure Color Mapping

Laser systems use specific RGB color values to differentiate between operations:

  • Engraving (Raster): Use pure Black (R: 0, G: 0, B: 0) for elements you want the laser to engrave into the material surface.
  • Cutting (Vector): Use pure Red (R: 255, G: 0, B: 0) for paths intended to cut all the way through the material.
  • Scoring/Vector Marking: Use pure Blue (R: 0, G: 0, B: 255) or another distinct primary RGB color to mark thin lines without cutting through.

3. Define Vector Lines and Outlines

Laser drivers rely on line thickness to identify vector cuts:

  • Select all paths meant for cutting or scoring.
  • Open the Outline Pen tool (press F12) and change the line width to Hairline.
  • Any line thicker than a Hairline will typically be interpreted by the laser software as a filled raster object rather than a cut path.

4. Prepare Text and Vector Shapes

Unconverted text and unmerged shapes frequently cause processing failures:

  • Convert Fonts to Curves: Select all text elements and press Ctrl + Q (or go to Object > Convert to Curves). This turns text into vector paths, preventing font substitution issues on the laser computer.
  • Weld Overlapping Paths: If you have intersecting vector shapes or script text, select them and use the Weld tool to combine them into a single continuous outline, removing internal cut lines.
  • Remove Duplicate Lines: Ensure paths are not stacked directly on top of each other, which causes the laser to cut the same line multiple times, potentially charring the edges.

5. Process Bitmaps for Raster Engraving

If your design includes photographic images or complex non-vector artwork:

  • Select the image and navigate to Bitmaps > Convert to Bitmap. Select RGB (24-bit) or Grayscale (8-bit) at 300 DPI.
  • Adjust the contrast via Effects > Adjust > Brightness/Contrast/Intensity to ensure highlights and shadows are distinct.
  • For standard CO2 lasers, navigate to Bitmaps > Mode > Black and White (1-bit). Select Floyd-Steinberg or Halftone dithering to convert continuous tones into clean laser-readable dot patterns.

6. Export the Final File

Depending on your laser system's workflow:

  • Direct Print Drivers: If your laser functions as a printer, go to File > Print, select your laser engraver, and adjust material settings in the driver window.
  • Software Import: If using external controller software, export the file via File > Export. Choose DXF or PLT for pure vector work, or PDF (PDF/X-1a standard), AI, or SVG to preserve both vector cuts and raster elements simultaneously. Ensure "Export text as curves" remains checked during export.