kicad-developers team mailing list archive

[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 <mailto: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 <mailto: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 <mailto: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>
>>>>> <mailto:reece@xxxxxxx <mailto: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> <mailto:jeff@xxxxxxxxx <mailto:jeff@xxxxxxxxx>>>
>>>>> *To: *"jp charras" <jp.charras@xxxxxxxxxx <mailto:jp.charras@xxxxxxxxxx> <mailto:jp.charras@xxxxxxxxxx <mailto:jp.charras@xxxxxxxxxx>>>
>>>>> *Cc: *"KiCad Developers" <kicad-developers@xxxxxxxxxxxxxxxxxxx <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>>>>> <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx <mailto: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>
>>>>>   <mailto:jp.charras@xxxxxxxxxx <mailto: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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