kicad-developers team mailing list archive

[Nick Østergaard <oe.nick@xxxxxxxxx>]

Ah, ok, it os the chamfers. I didn't realise that.  What are you proposing,
to remove the spoke if the zone does not touch?

lør. 22. jun. 2019 18.36 skrev Jeff Young <jeff@xxxxxxxxx>:

> There’s no piece of the zone in the middle; that’s just the chamfers on
> the ends of the spokes.
>
> The zone doesn’t go between the two pads because their thermal relief
> value doesn’t allow enough room.
>
> Cheers,
> Jeff.
>
>
> On 22 Jun 2019, at 17:04, Nick Østergaard <oe.nick@xxxxxxxxx> wrote:
>
> Mmm, I am not sure I under stamd that screenshot. Why are the zone not
> touchimg the thermal track between the pads while it looks like there is a
> part of zone area on the middle of the thermal track?
>
> lør. 22. jun. 2019 17.58 skrev Jeff Young <jeff@xxxxxxxxx>:
>
>> Our current algorithm will produce thermal connections between two pads
>> (with no connections to the zone):
>>
>>
>> I assume no one will lose any sleep over dropping those?
>>
>> Cheers,
>> Jeff.
>>
>>
>> On 21 Jun 2019, at 19:49, Jean-Paul Louis <louijp@xxxxxxxxx> wrote:
>>
>> Wayne,
>>
>> Except in very hugh frequency design (higher UHF spectrum, microwaves and
>> millimeter waves)
>> were chamfers can create more problems than they solve.
>>
>> This chamfer should be user optional, the best being individual part
>> layout optional.
>>
>> Just my extra data point,
>>
>> Jean-Paul
>> N1JPL
>>
>>
>> On Jun 21, 2019, at 8:05 AM, Wayne Stambaugh <stambaughw@xxxxxxxxx>
>> wrote:
>>
>> Jeff,
>>
>> Users are going to expect chamfering if there is an option for it.  I
>> don't see how you are going to avoid adding chamfering to the spokes
>> unless we decide to do away with chamfering as an option.  I don't think
>> that's good idea because right angles on board geometry is generally
>> frowned upon.
>>
>> Wayne
>>
>> On 6/20/19 4:24 PM, Jeff Young wrote:
>>
>> Turns out there’s a slightly unintended side effect.
>>
>> Before:
>>
>> Note the two truncated thermal spokes to the surface-mount pads at the
>> lower right.
>>
>> After:
>>
>>
>>
>>
>> The bug is fixed, but not that the junctions between the spokes and the
>> zone body are no longer chamfered.
>>
>> I’d say the “after” is better in that respect too, but again it’s
>> definitely different.
>>
>> Thoughts?
>>
>> Cheers,
>> Jeff.
>>
>>
>> On 20 Jun 2019, at 19:50, Reece Pollack <reece@xxxxxxx
>> <mailto:reece@xxxxxxx <reece@xxxxxxx>>> wrote:
>>
>> Memory is the second thing to go as one ages.
>>
>> I can't remember what the first one is.
>>
>> ------------------------------------------------------------------------
>> *From: *"Jeff Young" <jeff@xxxxxxxxx <mailto:jeff@xxxxxxxxx
>> <jeff@xxxxxxxxx>>>
>> *To: *"jp charras" <jp.charras@xxxxxxxxxx <mailto:jp.charras@xxxxxxxxxx
>> <jp.charras@xxxxxxxxxx>>>
>> *Cc: *"KiCad Developers" <kicad-developers@xxxxxxxxxxxxxxxxxxx
>> <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>> <kicad-developers@xxxxxxxxxxxxxxxxxxx>>>
>> *Sent: *Thursday, June 20, 2019 2:46:58 PM
>> *Subject: *Re: [Kicad-developers] 6.0 Zone filling differences
>>
>> Wow.  That’s sobering.  I wrote the board outline clearance changes….
>>
>> Age sucks.
>>
>>
>>   On 20 Jun 2019, at 19:04, jp charras <jp.charras@xxxxxxxxxx
>>   <mailto:jp.charras@xxxxxxxxxx <jp.charras@xxxxxxxxxx>>> wrote:
>>
>>   Le 20/06/2019 à 19:24, Jeff Young a écrit :
>>
>>       I believe we now have a warning, but I can’t remember what
>>       change it was for.  I thought it was for the outline changes,
>>       but from what I can find on the mailing list archive it looks
>>       like we were satisfied that one wouldn’t change anything.
>>
>>       So remind me what the warning is for?
>>
>>
>>   AFAIK, it is for board outline clearance change (taking in accounf or
>>   not the edge cut graphic items thickness, if I correctly remember).
>>   Zone outline changes (only activated if the kicad_advanced
>>   "ForceThickZones=0" option enables it), do not need any warning.
>>
>>
>>       The reason behind this request is that I have a new fill
>>       algorithm which fixes a long-standing bug regarding one pad’s
>>       thermal ring knocking out another pad’s thermal spoke.  It
>>       also allows thermal spokes on custom pad shapes (and would
>>       allow us to support custom number of spokes if we wished).
>>
>>       While this should only change zone fills which would have been
>>       considered errors in the past, it nevertheless changes them.
>>        What’s the prescription for that?
>>
>>       Cheers,
>>       Jeff.
>>
>>
>>
>>
>>   --
>>   Jean-Pierre CHARRAS
>>
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