My first time working on wht QGIS and importing vector geometry and using the cut tool in Lightburn. Call it a newb 2x. I have exported a SVG with one layer to keep it simple. The layer is a contour map.
Not sure if these are related but a few contours have a single “filled” appearance as opposed to two filled geometries slightly offset to create a line. (example in the jpeg)
The issue I’m having is when I use the cut feature it leaves a lot of if not all “ends” open, The attached jpeg shows two instances top right has a few closed as I would expect it to be. I’m still learning QGIS so I don’t know enough about how it exports files. I know there are multiple ways (Export, print export) and have tried both to SVG, PDF and DXF. So far I’ve been unable to find a combination that affects the results. I have tried the “offset” tool and given the geometry, it becomes fairly complex quickly.
Has anyone experienced this or have suggestions on how to resolve this?
Thanks for your response, Given the result, it appears that the exported geometry is not all closed to start with. The layer was set to “fill” (know how that goes)
Here is a full screenshot of the imported file (minus the hole cut in it). It appears to be closed but as you say, “if it was open, it will stay open”. Any suggestions on how to close them? I did try to start node editing but the task became larger the longer I looked at it.
The first process was the flat sheet engraving path but see the potential for layered output as well eventually.
It may that I’m fighting a losing battle with trying to force the SVG/dxf/pdf import. I just tried exporting a high res raster file of one layer and it traced well. The line thickness might get messy depending on the number of layers that may eventually be exported from QGIS.
Screen shot of the image in native QGIS. Note the difference “oddity” where it appears the export has “thicker” rings that I was referring to. This is where the geometry is closed. There is no adjustment in QGIS to affect this.
Something like this:
Obviously the thinner stripes needs the same treatment to became a (sheet) layer. Mt Blue Sky QGIS Trials 10.23.24.lbrn2 (3.6 MB).
Maybe there are some programs that may auto separate all the “strips” so that the job become easier.
still a noob, trying to keep up. Looks like you created a circle (line mode) just smaller than the “hole in the donut” What was the function that combines the geometry (or does it) into a closed feature?,
I was wondering if I were to create two fill circles on the same layer of that same diameter and combine “weld” them all together. Would that work? On my laptop doing “domestic things”, hard to try stuff on it.
With everything in line mode center-align the shape and the circles then duplicate and put aside as a backup. do several duplicates to work .
After that use the scissors tool to separate the shapes.
If you´ll want to engrave in Fill mode you´ll want to close the shapes with with Auto-Join (Alt+J) or Node Edit ( a trick when joining nodes is to set layer to Fill after a failed Alt+J so that when you join the last separated nodes the shape gets filled).
For layered output (only cuts) you don´t closed shapes only near segments is enough and you may also need to duplicate the circle (or the final shape) to “add” to the strips.
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Also remember that the final output may not need all the level lines to transmit the same perception.
Thank you, I can see a clear path to proceed. I’m not sure I need the “fill” ability, but it would be nice to know how to do it. I have an idea that is still in formation.
