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Date: Mon, 31 Aug 2015 15:10:50 -0400
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Subject: Re: [geda-user] [pcb-rnd] parametric footprint screw() (was: Re:
 [pcb-rnd] parametric footprint: dimensions, qf(), qfn() and tqfp())
From: "Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Precedence: bulk

Thank you this is very cool. I really like the silk screen outlines.
My one comment is that the copper should really always be the full
diameter of the screw head because you want the most contact between
it and the screw for grounding.

On Mon, Aug 31, 2015 at 1:50 AM,  <gedau AT igor2 DOT repo DOT hu> wrote:
> Hi all,
>
> using the example static footprints and the metric side of the table sent by
> Evan, I've implemented the first version of the screw() footprint. It has
> two modes of operation:
>
> 1. specify all dimensions by hand (watch out: default unit is mil for all
> scripts!), e.g. screw(3mm, 6mm)
>
> 2. specify the name of a standard screw and optionally specify the type of
> the head, e.g. screw(M3, cheese); to select the close fit hole, use M3:tight
> or M3:close-fit
>
> Furthermore there are optional silk layer head shape drawings for a few
> common shapes and slots, such as plain slot, hex, philips, torx. They can be
> combined.
>
> Examples:
>
> http://igor2.repo.hu/cgi-bin/pcblib-param.cgi?cmd=screw%28M3%29%0D%0A&mm=1&dimname=1&dimvalue=1
> http://igor2.repo.hu/cgi-bin/pcblib-param.cgi?cmd=screw%28M3%3Atight%2C+cheese%2C+shape%3Dcircle%3Ahex%29%0D%0A&mm=1&dimname=1&dimvalue=1
> http://igor2.repo.hu/cgi-bin/pcblib-param.cgi?cmd=screw%282.5mm%2C+5.52mm%2C+tx%3Acircle%2C+8.1mm%29%0D%0A&mm=1&dimname=1&dimvalue=1
>
> Reference:
> http://igor2.repo.hu/cgi-bin/pcblib-param.cgi?cmd=screw&output=help
>
> Regards,
>
> Igor2



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