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Teardrop and Polygon

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  • robertferanec
    replied
    "Yes, it looks to be a bug, but it is the same for Altium 20!"
    - interesting

    "It is a connector, I am adding teardrop for all drills. So you suggest it does not need it?"
    - I have never used teardrops and I have never had any problems. As I explained, if PCB manufacturer needs them, they will add them on that specific places (I can see, that even I do not use teardrops, they are added on very small tracks and VIAs when real PCB is manufactured).

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  • JohnsonMiller
    replied
    Hi Robert,
    Yes, it looks to be a bug, but it is the same for Altium 20!
    It is a connector, I am adding teardrop for all drills. So you suggest it does not need it?

    Leave a comment:


  • robertferanec
    replied
    Interesting. Looks to me more like a bug. Try to ask on Altium forum what Altium will say.

    PS: I do not normally add teardrops - PCB house usually add them to the tracks they need.

    PSS: how big is the hole? Looks like a connector hole or is it a VIA? You may not need to add teardrops if there is enough copper around the hole (I believe, teardrops are usually used to compensate tolerance of drilling for very small holes and rings).

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  • JohnsonMiller
    replied
    Sure! there are several solutions as well,
    but my question is why it is happening in the first place? then why DRC does not notice it and does not report a violation?

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  • mnpebm
    replied
    If there isn't way to handle this in design rules, you could you use a small polygon cutout.

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  • JohnsonMiller
    started a topic Teardrop and Polygon

    Teardrop and Polygon

    Hi Guys,

    In my design, I have added teardrop then re-pouring polygons, I was expecting polygon pull-back based on teardrop, things that is normally happening in most cases; but in a section of design nothing happens, attached is screenshot:

    Click image for larger version

Name:	Tear_Drop.png
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    any help what is the cause? how to fix it?

    Regards,
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