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How to delete orphaned polygons

qzic

I have a PCB which I auto-routed and the ripped-up all traces and the auto-routed again. Running DRC exposed overlaps. These overlaps were actually orphaned polygons. I had not created any polygons on my PCB, these are obviously pieces of traces that rip-up all missed.

Orphans on/off has not effect

attempts to delete or check properties of these orphans does nothing.

Solutions anyone?

  • Hi,

    If you can attach a screenshot, it will help. Currently it's unclear, because the autorouter doesn't create polygons (as far as I'm aware). If you'd manually created a large polygon, you could delete it. so that wouldn't cause any orphaning either. As a result, it's unclear what you mean and a photo could help. Finally, it's best to just not use the autorouter, most CAD packages (EAGLE included, in current releases of it) have manual routing systems with assist capability to help quickly lay down traces that automatically do not overlap.

  • image

    This is what it looks like. I did not create these orphans but would like to delete them. I'm showing only top and bottom layers after doing a rip-up all.

    I idid do a global trace width change after the autoroute. Maybe that's what caused this.

  • in reply to qzic

    Hi,

    These are not orphan polygons, they are just artifacts from the DRC findings. I think re-running the DRC might clear it, or if you click on the following button: Or just saving the project, closing it and re-opening it.

    image

  • OK, so they just looked like polygons but actually just Eagle dandruff.  Closed the brd and re-opened, all gone. Thanks. Adding this to my cheat sheet.

  • in reply to qzic

    Yes, they are DRC Errors in the board layout. When we hit the DRC Errors button ( rectangular yellow colour symbol ) on control panel (left side ) in boards layout editor these all automatically generated for better clearances jobs for the users. We can clear the problems in our boards layout according to these DRC Errors. Or we can forcely clear all these errors in newly opened DRC Errors window. Above mentioned solutions is also help for this issue, thankyou.