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Mail Archives: geda-user/2016/04/13/03:49:07

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Wed, 13 Apr 2016 00:48:21 -0700 (PDT)
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Date: Tue, 12 Apr 2016 23:48:21 -0800
Message-ID: <CAC4O8c_EHe2DfsK6WLT9gwk6ywbFeEZf88Qp2KeU5bpC2qR5Cg@mail.gmail.com>
Subject: Re: [geda-user] invert pcb output
From: "Britton Kerin (britton DOT kerin AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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On Tue, Apr 12, 2016 at 4:42 PM, DJ Delorie <dj AT delorie DOT com> wrote:
>
>> What's a quick way to invert output for exposing photoresist?
>
> Select the "ps-invert" option in the dialog.  There's also a "mirror"
> option if you need it flipped over (the ink should be towards the
> board for the best focus).
>
> However, I use png export for masks as some postscript interpreters
> make objects one pixel too big or too small due to edge condition
> rules in PS.

FWIW I used to make boards with photoresist and etch and the
straight-to-ps output always worked right for me (if it was off by a
pixel I didn't notice).

Britton

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