X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20130820;
        h=x-gm-message-state:mime-version:sender:in-reply-to:references:from
         :date:message-id:subject:to:content-type;
        bh=/0aKsmuxqrYG2iICGiL+xxamjytIZjxBUvQjiPy4/zQ=;
        b=IZXLWEWvXN5wMD8z3ohQTclAOnvCh6E5jPhqmAi354e77tN4nA3xu/5lj8QfJcWP2e
         lfzSs7jpi6YQvIbGETsTz2+nU/bDuxkBEgc00XYhS+jk1ipJreGLT5/hXA4declKoZ+K
         BZOpNmG268xgaFEbaeO4EhjUTAwGHMQIzqPVhfi6/qd/jku5M+XAl3jQCR5o+cYmbCFC
         lcG1X+rTj3+Mb0qbcDiXs8uJi+qsUM+GAP8kv4maKLekoX88zR6jl5CIfie6oCc6TSop
         oIfn0egyamzodWUQdoD1K3jTqj9ewycDljOnpqwYGkBwhXW56UI88VQkihyfKyg3eQQH
         RzsA==
X-Gm-Message-State: ALoCoQkOxamlcjsLKZxcGJ9QXBFPyTaR5YJ0Fwoj1MBdbheh4Nt8kaVig8LX8EIh+c99NJCORCjn
X-Received: by 10.152.181.34 with SMTP id dt2mr26854474lac.84.1438004650595;
 Mon, 27 Jul 2015 06:44:10 -0700 (PDT)
MIME-Version: 1.0
Sender: mjd AT hackvana DOT com
X-Originating-IP: [49.183.89.78]
In-Reply-To: <55AFE14E.5040704@buffalo.edu>
References: <55AFE14E DOT 5040704 AT buffalo DOT edu>
From: "Mitch Davis (mjd+geda-user AT hackvana DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date: Mon, 27 Jul 2015 23:43:51 +1000
X-Google-Sender-Auth: n_us6PYofJGh1-iay_lvMofepXQ
Message-ID: <CA+KzSgJy7t=fqNAA1aBH0--6ThqzgzH_09s8MH=8p=_vhCciPg@mail.gmail.com>
Subject: Re: [geda-user] Component Cut-outs in PCB
To: geda-user AT delorie DOT com
Content-Type: multipart/alternative; boundary=001a11341b46626a0d051bdb8cfb
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

--001a11341b46626a0d051bdb8cfb
Content-Type: text/plain; charset=UTF-8

On Thu, Jul 23, 2015 at 4:30 AM, Stephen Besch <sbesch AT buffalo DOT edu> wrote:

>
> First off, every board shop that I deal with want cut-outs in a separate
> gerber file.


How odd.

I ask my customers to put cut-outs either in the outline file (.gm1 or
.gko) or do it as a non-plated slot, along with non-plated holes
(-NPTH.txt).  I wrote about it here:

  http://hackvana.blogspot.com.au/2014/02/slots.html

Gerber/Excellon are formats which exist to convey info from CAD to CAM.  In
the words of Karel Tavernier (who is the boss of Ucamco, the custodian of
Gerber), "The Extended [Gerber] format enables clear, unambiguous
communication between designer and CAM engineer".

This is a really interesting article, especially the first page:


http://www.ucamco.com/files/downloads/file/22/Kick_Starting_a_Revolution_IPC-2581_Meets_Gerber.pdf

IMO it's a mistake for us to second-guess how a board shop actually makes
the boards.  It serves as a specificationm and should just describe what we
want.  I really can't understand that a company would require us to do
their CAM job work for them.  Sigh.

Mitch.

(thanks to xmd for writing the pcb patch which adds --name-style hackvana)

--001a11341b46626a0d051bdb8cfb
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<br><div class=3D"gmail_quote">On Thu, Jul 23, 2015 at 4:30 AM, Stephen Bes=
ch <span dir=3D"ltr">&lt;<a href=3D"mailto:sbesch AT buffalo DOT edu" target=3D"_b=
lank">sbesch AT buffalo DOT edu</a>&gt;</span> wrote:<br><blockquote class=3D"gmai=
l_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left=
:1ex"><br>First off, every board shop that I deal with want cut-outs in a s=
eparate gerber file.</blockquote><div><br>How odd.<br><br>I ask my customer=
s to put cut-outs either in the outline file (.gm1 or .gko) or do it as a n=
on-plated slot, along with non-plated holes (-NPTH.txt).=C2=A0 I wrote abou=
t it here:<br><br>=C2=A0 <a href=3D"http://hackvana.blogspot.com.au/2014/02=
/slots.html">http://hackvana.blogspot.com.au/2014/02/slots.html</a><br><br>=
Gerber/Excellon are formats which exist to convey info from CAD to CAM.=C2=
=A0 In the words of Karel Tavernier (who is the boss of Ucamco, the custodi=
an of Gerber), &quot;The Extended [Gerber] format enables clear, unambiguou=
s communication between designer and CAM engineer&quot;.<br><br>This is a r=
eally interesting article, especially the first page:<br><br>=C2=A0 <a href=
=3D"http://www.ucamco.com/files/downloads/file/22/Kick_Starting_a_Revolutio=
n_IPC-2581_Meets_Gerber.pdf">http://www.ucamco.com/files/downloads/file/22/=
Kick_Starting_a_Revolution_IPC-2581_Meets_Gerber.pdf</a><br><br>IMO it&#39;=
s a mistake for us to second-guess how a board shop actually makes the boar=
ds.=C2=A0 It serves as a specificationm and should just describe what we wa=
nt.=C2=A0 I really can&#39;t understand that a company would require us to =
do their CAM job work for them.=C2=A0 Sigh.<br><br>Mitch.<br><br>(thanks to=
 xmd for writing the pcb patch which adds --name-style hackvana)<br><br><br=
></div></div>

--001a11341b46626a0d051bdb8cfb--