I love the output of the jigsaw filter and would like to use it to laser cut some jigsaw puzzles.

However I have been unable to produce the obligatory single 0.001" line that the laser cutter requires.

Customarily I would use Inkscape to produce the final cutting template but Inkscape treats the GIMP produced image as two lines with fill between them. Removing the fill is simple but, of course, leaves the double lines.

Does anyone have a solution in GIMP - or indeed in Inkscape - for this?

Much appreciate any assistance.

TIA

What you have suggested seems to me to work fine. And seems to Inkscape likewise.

Can hardly wait to see if the laser cutter agrees with us.

Thanks so much.

It's all so easy ... when you know what you are doing.

Thanks again.

On 16-02-28 01:34 PM, Richard wrote:

This is not really something you can do in Inkscape because its bitmap trace necessarily traces both sides of each line. However extracting the jigsaw pattern itself (albeit in bitmap form) is a simple operation in GIMP:

1 - Create a new layer, white, on top of the image. 2 - Execute a Jigsaw operation on that layer with a Highlight setting of zero. (a Bevel setting of 0px also works..) 3 - Go to the Layers > Transparency menu and perform a Color To Alpha using white as transparency.

If you absolutely need the cutting lines in vector form, what would be ideal here is for the Jigsaw filter to be able to output it as a GIMP path object instead of painting it onto the target layer but the plug-in doesn't do that in its current form.