Guide to Preparing Files for Laser Cutting

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Guide to Preparing Files for Laser Cutting

When preparing a file for laser cutting, it's essential to follow some guidelines to ensure the file is correctly configured for the machine. Here are the main recommendations students should follow for optimal results.

1. File format

  • The required file format for uploading to the machine is .DXF (Drawing Exchange Format). Make sure the file is saved correctly in this format to avoid issues when importing into the machine.

2. Workspace

  • The machine's workspace is 600 x 300 mm, so your material must fit within this size.
  • The maximum cutting height is 10 mm. Make sure the material you bring conforms to this height.
  • Materials: Students must bring the material already cut to size, on a board measuring 600 x 300 mm or smaller. The workshop has scroll saws for cutting the material, but it's recommended that you arrive with the material already cut to size.

3. Reference Rectangle

  • Each .DXF file must include a 600 x 300 mm reference rectangle. This rectangle should delimit the pieces to be cut and/or engraved and serve as a guide for the machine. Note: Don't forget to include this reference rectangle. The machine will use it to define the limits of the cutting area.

4.  File structure 

  • A single file for each board: Each board of material must be accompanied by a single .DXF file. If you need to work with five boards, you will need to prepare five separate .DXF files. Tip: Organize your work to avoid confusion: one file for each cutting area. Don't overload a single file with more than one board to avoid errors during upload.

5. Closed Curve with No Overlaps

  • Each piece to be cut or engraved must be a closed curve. Open curves are not considered by the machine and may cause errors in the cutting process.
  • No overlap between pieces: The pieces to be cut must not overlap. Make sure there is space between the shapes or that they are correctly arranged in the file. Overlapping can cause errors in the cutting path, which can compromise the quality of the final work.

6. Layer setting

  • Use layers to separate cutting from engraving: Black Layer (0,0,0): Use this layer for cutting. The machine will interpret the black lines as cutting paths.
  • Red Layer (255,0,0): Use this layer for engraving. The machine will interpret the red lines as engraving paths, not cutting paths.
  • Tip: Make sure each part of the file is correctly assigned to the correct layers. An incorrect layer selection can lead to malfunctions or inaccurate results.

7. Dimension

  • Always measure twice! Before exporting the file, check that all dimensions are correct. Make sure the file's working area is 600 x 300 mm and that each element is positioned correctly within these limits.
  • Make sure the tolerances are correct and that the cutting lines are not too thin, otherwise they may not be recognized by the machine.

8. Tips for Working with Software

  • Recommended software for creating .DXF files:
  • AutoCAD: A widely used software for creating .DXF files with layers and precise curves.
  • Inkscape: A free software that allows you to draw and save .DXF files, very useful for simpler shapes.
  • Illustrator: Another tool that allows you to easily export to .DXF format.
  • If you're using Rhino (Rhinoceros 3D), you can export directly to .DXF format by choosing the Save As option and selecting the correct format. Be sure to check that all objects are correctly defined as closed curves.

9. Final File Verification

  • Before sending the file for cutting, it's essential to verify that the .DXF file contains only closed curves and that all the geometries are correct. You can use the software's verification tools to identify any errors.
  • Make sure the curves are correctly defined on the correct layers (black for cutting, red for engraving).
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