Island zone not filled in pcb design

Layout
1

Hello, I’m trying to design a 2-layer flexible PCB sensor, which need some metal pads.
But it never fills, only show hatched edges.
I follow the 10:39 of the tutorial but cannot get a filled zone, only a hatched region.
I tried to connect the pad with traces but it still doesn’t work.

problem of no filling zone
problem of no filling zone2432×1452 65.7 KB

List item

Is there anyone have some ideas about it?

2

hard left edge
show filed areas of zones

3

I suggest to use pad and not zone. So define a footprint containing one square pad.
Zone to be filled need to connect to the right net. If inside the zone you have no pad with the same net than zone is not filled. I’m not sure if right net via is enough for zone to be filled. Never checked it but suppose it is not.

4

There are plenty of possible reasons why the zone-filling gives not the result you desire. The first coming to my mind:

  • copper zone display disabled (left toolbar, or View–>Drawing modes–>Draw zone fills/draw zone outlines))
  • copper zone not calculated (after drawing the zones the filling needs to be calculated).
  • not a copper zone, but a rule-area created
  • copper-layer not correctly assigned
  • false net-name assigned to copper-zone
  • setting for “remove islands” → try to set “never” for first steps with zones

But all these hints are on based on guessing.

It’s much better that you develop the skills to really understand the zones , there parameters and there behaviour. I recommend to completely read (and work) with a simple tutorial from start to end. For instance Getting Started in KiCad | 6.0 | English | Documentation | KiCad , section “placing copper zones” and
PCB Editor | 6.0 | English | Documentation | KiCad as the complete zone-documentation.

Another hint is to attach the project-archive in question, because with only your picture it’s hard to give substantial answers.

Last hint: it’s not a good behaviour to post an identical question into two different threads.

5

Thank you mf_ibfeew for the exhaustive reply!
I tried these ideas and when I assigned correct net, the fill just appeared.

I apologize for the inconvenience I brought to you for posting similar question at different posts. I did this because their method doesn’t work for me. I will avoid this situation next time.

It takes some time to develop good understanding about the zones and Zen, but that’s a correct direction. I will do it.

6

Hi, Piotr,

I appreciate your prompt reply.
Net assignments works well for my problem.
Now the zones are filled.

Thank you
Ziqi Jia

7

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.