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Mail Archives: geda-user/2012/05/29/13:25:31

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Date: Tue, 29 May 2012 19:24:26 +0200
From: Gabriel Paubert <paubert AT iram DOT es>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] extra mask, plating, and silk colours in pcb
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On Mon, May 28, 2012 at 04:43:38PM -0500, Benjamin Bergman wrote:
> Thanks for the kind words, Andrew. I was on the gEDA IRC channel while
> writing this and some of my decisions came from discussions there.
> 
> 
>    1. We decided that, based on the weird math and the amount of tweaking
>    of colour values required, using pre-programmed values seemed like the best
>    option. However, I would like to add an extra 'hex' option that allows the
>    user to use their own values.
>    2. I have only really seen tinned plating and gold plating on commercial
>    boards, so a toggle seemed fine there. I suppose a copper option might be
>    nice for home etched boards. Are there any other options that should be
>    added? A 'hex' mode seems less viable for plating as the gold and tin work
>    in different ways in colouring the shadow and creating a texture.

Actually some manufacturers also offer silver, which is initially very bright
but changes with time.

>    For the silk screen colours, I have only really seen black or white. I
>    think I saw a yellow silk screen once, but that is not an option I've seen
>    with any fab houses. I think the silk would be the simplest one to drop in
>    a hex field, but don't imagine much variety will be required. If lots of
>    people want it, I have no problem adding it :)

One of my manufacturers offers:
- green (default), black, blue, white, and red for the soldermask
- white (default), yellow and black for the silkscreen 

Obviously, using the same colour for soldermask and silkscreen is not
recommended.

	Gabriel

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