Outline a bitmap in Inkscape

I keep doing this for lasercuts but getting a double outline instead of a single outline, and so a double cut. This is because (apparently) Inkscape doesn’t do “centre line tracing”. For simple shapes there’s a work-around though:

  • paste the bitmap into a document
  • Path -> trace bitmap, inverting the image
  • Delete the image, select the trace
  • Path-> stroke to path
  • delete the square outline of the image

I’ve put a video of this on flickr.

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