December 17, 2021, 6:07am
i have a pdf of a set of aerofoil ribs for a plane, as scanned from an original file
when i request for lightburn to trace them, the resulting outlines are not a line, but a pair of parallel lines that seem to define each side of the line drawn in the pdf
is there a way to force the conversion to trace the “centre” of the line rather than discretely plot both edges of what should be a line that has no discernible thickness
if i can manage that, i can move on to my next part of getting them cut…
December 17, 2021, 10:52am
What you’re looking for is referred to as centerline tracing. LightBurn doesn’t do that today.
Inkscape is free and has centerline tracing capability if you want to try it.
December 17, 2021, 12:47pm
Unfortunately, LightBurn does not support center trace (yet). If the original part “is suitable for it”, you can set it to file and then trace it, it will give a single line.
thanks for that option - will investigate
December 17, 2021, 12:50pm
i have inkscape installed, but have not yet learnt to drive it adequately to accomplish my requisite goal
another skill to acquire, but the current version of lightburn has already simplified driving the neje master 2s considerably since a month ago
December 17, 2021, 1:04pm
You needn’t hesitate to try Inkscape as the workflow for tracing is very similar to LightBurn.
Change trace type to Centerline
Push update to see a preview
Push Apply to complete the trace
I also had the same problem with an image file and used this website
Rapid Resizer to generate a centerline trace of the image. It worked for me.
December 23, 2021, 11:53am
if i complete the trace, what do i save the resulting trace as, to successfully use in lightburn ?
and having done so, do i open or import that file to lightburn ?
and does the initial file need to be a jpg or png, or can pdf also work ?
so many questions, such a noob…
December 23, 2021, 12:12pm
All non-LightBurn files need to be imported and pdf files also work fine.
December 23, 2021, 12:38pm
Inkscape’s native file format is SVG which LightBurn can use. Simply save the file in Inkscape.
Either will work but the behavior in LightBurn is slightly different. You can use open if you want to start a brand new project. However, if you want to bring the object into an existing project, use import.
I assume you’re asking about the original file that you trace? If so, jpg or png is fine. PDF also works but is more nuanced because PDFs can contain both vector (path data) and raster (bitmap data) objects. If the PDF has vector information, then that can actually be used directly without tracing. If raster, then a trace would be required.
January 22, 2022, 12:39pm
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