Laser Cutting Process

1. Introduction

Laser cutting requires vector-based files such as SVG or DXF. However, many designs start as raster images (JPG, PNG). This report outlines the step-by-step process of converting a JPG image into a laser-cut file using Inkscape.

2. Tools & Software Required

3. Step-by-Step Process

Step 1: Open the Image in Inkscape

  1. Open Inkscape and go to File > Open.
  2. Select the desired JPG image and click Open.
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Step 2: Convert Raster Image to Vector

  1. Select the image.
  2. Go to Path > Trace Bitmap.
  3. In the Trace Bitmap window:
    • Choose Brightness Cutoff for high-contrast images.
    • Choose Edge Detection for outline-based vectorization.
    • Adjust threshold settings if needed.
  4. Click Update and then OK.
  5. The vector version appears over the original; move or delete the original JPG.

Step 3: Clean and Edit the Vector

  1. Select the traced vector and go to Path > Break Apart (if necessary).
  2. Use the Edit Paths by Nodes tool to refine details.
  3. Remove unnecessary details by selecting and deleting unwanted nodes.
  4. Simplify curves using Path > Simplify if needed.

Step 4: Prepare for Laser Cutting

  1. Set the stroke width to 0.01mm (or Hairline) for cutting lines.
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Step 5: Save in the Required Format

  1. Go to File > Save As.
  2. Choose SVG, DXF, or PDF (depending on laser cutter compatibility).
  3. For DXF:
    • Ensure ROBO-Master type and LWPOLYLINE options are selected.
    • Set the correct units (mm or inches) for accuracy.

Step 6: Test and Final Adjustments

After testing various valueson MDF sheet, a cut speed and laser power have to set appropriately for engraving and cutting. Done the two test cases attached here

First case , more power, low speed, entire image is burned out

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Second case ,laser shaping on outlining is done, but appropriate power is not set for cut from mdf board . The image shown below, during laser cut board get burned out at the border

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video is attached for border cutting on mdf sheet