X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        bh=MDGm1dCzBS8XNC1KaS8D/I+O2OtbnSr7Z3l+I0ss2Mk=;
        b=ekq+L+zLKnukPKnlxDdKR9veKCZ3/A0QjLyj/F71usG433HGxat1+6OVNWv56YrRc2
         d0qLcuI53m8j2rsWnJE6N9Xw0USFnfZ0zdp80sVWRNCow0vExcH26uzuH2X26w5qauyl
         VZjGR+36Hz0WyzbpDL3mLVPjYsroJcwaiB+/MFq06SB5OnqG99c2CdlBu0Z3KDh6b+jp
         Gb8hL8qzH8c1KNs/2cgwEj4UhVuIEIZbNq/dPh/lmUKbLYFEZwtavFmlQ98ZMsKgs9Uv
         ui7GjuXKUt0UuqFrwtJ1hEkWWmG+j5d7FTYNe4D90WAGZAEbJTDBX6YH80PfpZGikMMx
         Pi/g==
MIME-Version: 1.0
X-Received: by 10.180.105.165 with SMTP id gn5mr24955684wib.20.1438019227937;
 Mon, 27 Jul 2015 10:47:07 -0700 (PDT)
In-Reply-To: <CA+KzSgJy7t=fqNAA1aBH0--6ThqzgzH_09s8MH=8p=_vhCciPg@mail.gmail.com>
References: <55AFE14E DOT 5040704 AT buffalo DOT edu>
	<CA+KzSgJy7t=fqNAA1aBH0--6ThqzgzH_09s8MH=8p=_vhCciPg AT mail DOT gmail DOT com>
Date: Mon, 27 Jul 2015 09:47:07 -0800
Message-ID: <CAC4O8c9TrBE-Ysp4ifA1Tf+vvhTj2qkuz8U7UawiyO095ax3kQ@mail.gmail.com>
Subject: Re: [geda-user] Component Cut-outs in PCB
From: "Britton Kerin (britton DOT kerin AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Content-Type: text/plain; charset=UTF-8
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

On Mon, Jul 27, 2015 at 5:43 AM, Mitch Davis
(mjd+geda-user AT hackvana DOT com) [via geda-user AT delorie DOT com]
<geda-user AT delorie DOT com> wrote:
>
> 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.

I use pcb-pool.com, for (admittedly not too tiny) cutouts I've just made
silk lines and write "Cut Out" in text on the area to go away and they've
been fine with it.

Britton