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I need edge plating for a KiCad PCB and I'm not sure how to draw it. I've checked this explanation and it looks like I need overlapping copper on the PCB edges. But KiCad is trimming the polygons on the PCB edges, so there is no overlapping possible.

Edit:

I need edge plating for the yellow outline.

enter image description here

What is the best way to draw it in KiCad?

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Edge plating is something you need to ask from your PCB manufacturer. What you need/might want to do in your PCB is just to add copper up to the edges of your PCB, where you want the copper plating to be:

filled shape kicad

So adding filled shape all along the edges of where you want the plating to be, you can then ask your manufacturer to make these edges plated.

As far as I know, in gerber the edge plating cannot be defined, as in gerber you export layer-by-layer data.

In eurocircuits for example you are given these options when uploading a PCB:

eurocircuits plating

So in order to have copper up to the board edge you need to use filled shape, as the filled zones will keep their distance from the edge board (providing you have made your design rules to have a >0 distance from edges.

Also, make sure that your manufacturer understands where you want the plating(s) to be and where these plating are connected (if connected) on each layers of your pcb as its a tricky process that (almost always) is configured by hand from the manufacturer.

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  • \$\begingroup\$ Thanks for the explanation. Do you know which output format is a good choice in KiCad? \$\endgroup\$
    – Kampi
    Oct 3, 2023 at 9:03
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    \$\begingroup\$ Can you define "good"? For pcb manufacturing you use Gerber file with "extended X2 format" selected. Or you may ask that question in kicad forums: forum.kicad.info \$\endgroup\$ Oct 3, 2023 at 9:10

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