From a quality perspective, why don't you just reject the boards back to
your supplier and bill 'em. Bit of buck passing I know but sure as hell
doesn't mess up your process. If the problem is consistantly bad then you
should be addressing the root cause (be it supplier or design)and not
dressing the wound. Sorry this doesn't address your "production needs" but
if you work with trash then you end up in the trash - put your foot down!!!

Best Regards

Ian Boyton


>From: Matthew Lamkin <[log in to unmask]>
>Reply-To: "TechNet E-Mail Forum." <[log in to unmask]>,              Matthew
>Lamkin <[log in to unmask]>
>To: [log in to unmask]
>Subject: [TN] Marking bad boards?
>Date: Wed, 9 Jun 1999 09:18:24 +0100
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>
>Hi there, after seeing a previous post & having a chat with a QUAD
>engineer I'd like to ask you folks
>what sort of methods you use to mark bad boards within a panel?
>
>Currently we have no working method of telling our Quad 100 p&p machines
>that a board is bad & not to place
>components on it.
>We have tried placing white dots on the boards but its a bit hit & miss,
>so we just refuse to use panels with bad boards in.
>This I know causes problems & a slight price rise due to the
>manufacturers waste.
>
>What has been suggested is to put an array of 1mm copper circles (resist
>free), in the borders of the panel
>in the same step & repeat arrangement as the boards, and have the p&p
>machine scan them first to determine
>the bad-uns.
>
>What I would like to know is what you folks use/do for this??
>
>
>
>T.T.F.N
>Matthew Lamkin
>Printed Circuit Board Draughtsman
>Protec Fire Detection PLC
>Churchill Way,
>Nelson, Lanc's
>BB9 6RT.
>England U.K.
>Tel 01282 717393
>Fax 01282 717273
>Email = [log in to unmask]
>
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