Re: gEDA-user: OT: large (29 inch) boards?

[Dave N6NZ <n6nz@xxxxxxxx>]

On Dec 22, 2009, at 2:08 PM, phil wrote:

> 
> I'm trying to find a shop that will make 29" long boards.  They are 
> simple 1/16" two layer boards and will have card edge connectors.
> 
> Is there a known vendor for this type of work

I suspect any of them can do any board that fits in a panel, and the panels they use are huge.  It will cost you, though.  Send e-mails for quotes and see what you get back.  A lot will depend on how good the registration needs to be between layers.

Back in the days when I was a CPU designer, we did backplane boards much larger than that.  I once spec'ed out an impedance controlled (IOW: very thick) PCB that was 42" x 6". Yes, everybody thought I was nuts.  I probably was/am, but let me tell you with an impedance controlled PCB, and passive pull-up/pull-down termination at both ends, the signal edges were text-book clean.   I don't remember what it cost, but that was ages ago so it wouldn't be useful information today.  For that matter, the box it went into sold for a cool $1M, and only used 6 of these boards, so it didn't matter then, either :)

-dave

> ?
> 
> Thank you, Phil Taylor
> 
> 
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