Hello,
I am using Kicad 5.1.6
When I did fill or refill all zones (add filled zone) in pcb_new, it gave me some odd horizontal lines like this:
Any ideas what it is and how to fix it? Thanks!
Wrong display mode for zones. Try these:
The lines show the internal constituents of the zones but are an unnecessary implementation detail.
2 Likes
Thank you very much!
As you probably guessed by now, it’s “normal”.
It’s an artifact of the way KiCad handles internal holes in Zones.
For KiCad itself there are no holes in zones, but the zones have a single, but complicated outline that goes around the holes.
KiCad is actively being used by many pople and with many PCB manufacturers and some PCB manurefacturers, and I’ve never heard complaints of this being problematic in any way.
I don’t even know if it makes it to the Gerber files, those are in a different format, use different algorithms for filling.
They can be seen in the gerbers for zone fillings. That’s a strategy which can be seen in some document(s) by Ucamco, so it’s not a hack, but using negative flashes might give “cleaner” results and smaller file size for some objects.
KiCad does the filling, gerbers have only the filled areas, not the zones per se.
KiCad sort of uses drawing lines and flood fill
Gerber files (used to?) work with “flash codes”.
Think of it as defing the form of a postage stamp (for example in the form of a pad), and then using that stamp on different coordinates. Those stamps may overlap, it just gets all filled. You see this for example in rounded corners.
But hte most important is:
Don’t worry about it, it’s OK.
(Which you already posted in #3).
This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.