I Agree,
Minimum clearance from an edge is not the same thing as minimum
clearance from a trace. Would like to see this also.
The idea to have the zone clearances optionally come from the Design
Rules is also good.
Steven
On 01/05/17 08:28, José Ignacio wrote:
While changing the format it would also be great if a separate
clearance could be specified between the zone and board edges vs trace
clearances, at least leave the capability in the format if it can't be
implemented yet. I've found that the required copper pullback in some
cases is much higher than what would be desirable for regular
zone-trace clearances, which required me to get creative with the zone
outlines.
Thanks,
Jose
On Sun, Apr 30, 2017 at 5:32 PM, Tomasz Wlostowski
<[email protected] <mailto:[email protected]>> wrote:
On 30.04.2017 21:02, Lachlan Audas wrote:
> Here's the link,
>
http://www.cosmosc.com/example/A10-A20-OLINUXINO-MICRO-4GB_Rev_D.brd
<http://www.cosmosc.com/example/A10-A20-OLINUXINO-MICRO-4GB_Rev_D.brd>
> it's in eagle format, so import under pcbnew.
> I should of added that viewing the (E)properties and make no changes
> (but hitting the OK instead of the Cancel button) regenerates
the flood
> fill.
> while not wrong, it may be worth adding a change bit, to the
> properties requester, and only regenerates if something has
changed.
> But I suppose that's nit picking ;)
>
Hi,
Lachlan sent me a complex board in Eagle that has several copper
zones,
each with different clearances, which filled incorrectly or didn't
fill
at all. There were some trivial issues (e.g. inverted filling
priority),
but there is one that needs discussion:
In pcbnew, each zone must have manually assignned clearance (in the
property window). In Eagle or Altium, if there's no clearance
specified,
the program takes the clearance set in the Design Rules for the
net the
zone belongs to.
I propose to add a similar feature to Kicad, that is:
- add a checkbox "use custom clearance" in the zone properties window
- if not checked, take the netclass clearance.
This unfortunately requires a small file format change. Would you
agree
with that?
Also, many thanks to Lachlan for spotting this problem!
Cheers,
Tom
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