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Date:	Wed, 2 Apr 2014 09:38:04 -0700
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Subject:	Re: [geda-user] printing from PCB
From:	Britton Kerin <britton DOT kerin AT gmail DOT com>
To:	geda-user AT delorie DOT com
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On Wed, Apr 2, 2014 at 5:07 AM, Jason White
<whitewaterssoftwareinfo AT gmail DOT com> wrote:
> Building your own boards, ay?
>
> I know this isn't directly related to your question but I always exported a
> 1000 dpi monochrome PNG file for each layer and loaded it into GIMP or
> another photo manipulation program. From there I could panelize my design
> (tile it), add descriptive headers such as "THIS SIDE UP" and print it with
> a supposed .001" accuracy. At 1000dip the resolution of the image in pixels
> correlated directly to how many thousands of an inch wide it was supposed to
> be, simplifying the task of recognizing how big or small a design really
> was.
>
> One thing I found was that the large commercial printers such as the ones
> Staples or OfficMax typically have, print *far* superior masks (transparency
> slides) than anything I could achieve at home with a consumer laser printer.
> If you are doing photo-lithography (the photo transfer method) I would
> strongly recommend getting a pdf of the mask printed off by them for a buck
> or two. Typically home printed transparencies have to be doubled up for
> additional opacity, whereas theirs did not.

I would advise not using transparencies, but instead using tracing paper.
Its UV permeable and laser printers can print to it well.  I could never
get transparencies to work at all from my home laser, they melt the toner
doesn't stick well etc.

Britton

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