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Subject:	Re: DES: V-Grooving Multi-layer bd.
From:	MARK SIMMONS <[log in to unmask]>
Reply To:	TechNet Mail Forum.
Date:	Mon, 15 Dec 1997 15:38:27 -0800
Content-Type:	text/plain
Parts/Attachments:	text/plain (43 lines)

Steve Collins wrote:
>
> I have a design that lends itself to being V-Grooved but I seem to recall
> either in a Forum discussion of a personal discussion that this could be
> dangerous for multilayer bd.. The reason would be that it would be possible
> to fracture an internal layer with the V-Groove panel style. When I think
> about the alternative which is to rout the board it seems to me that the
> same danger is present when you break the boards away from the tabs present
> on the panel. Does anyone else have a feel for this or have experienced any
> of the things I has discussed.
>
> Steve Collins
>
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Steve, we are scoring M/L's on a daily basis and some are extremely
dense.  So, far so good. It would probably take a major inner layer
shift to create problems with the cores.

Mark

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