I have a QR Code created on QRCode Monkey (I wanted more flexibility than the built-in Lightburn tool) and I’m running into an issue.
It can’t scan in lightburn.
I can scan it off the screen on QRCode Monkey.
I can scan it off the screen in Inkscape.
I can even scan it off the screen in this post’s preview.
But in Lightburn, either in print preview or just with filled smooth turned on, no scan.
I will take any suggestions as to what in the world is going on. I made the mistake of not testing the qr code in lightburn before printing and really don’t want to waste that much time again =D
The LB file looked different to the one that I copied and pasted. The three corner markers aren’t correct so I looked at it in wireframe mode. The geometry looked good but there are 3 duplicate curves. Remove these (using the ‘Delete duplicated’ tool) and it will work.
So now I need to figure out where in the heck that’s breaking (but on the plus side, this seems to fix it, at least with regards to screen scanning. We’ll see how it etches on … whenever I get to it =\ )
Sorry, I disappeared last night. It was getting late here in the UK and had to go to bed.
I’ve opened your SVG in Inkscape, Affinity Designer and CorelDRAW and found there is a duplicate path in each of the three ‘positioning’ markers. Here’s a screenshot from CorelDRAW showing one of the duplicate paths that I’ve dragged out to one side.
Unlike most applications LightBurn uses an ‘odd/even’ fill rule, which means that this duplicate will ‘flip’ any fill that overlaps it. As a result the white area inside the marker is switched to black and the dot that should be black is flipped to white, so removing the duplicates puts it all right again.
This is not unusual when importing graphics from another application so it’s often wise to perform a ‘Delete duplicates’ on any imported geometry just to make sure it’s ‘clean’. Mind you it can also be a useful tool if you need to flip an entire design.
