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From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: 1523 joints
References: <3DB68B8F.70B3F746@webaccess.net> <firstname.lastname@example.org>
Date: Wed, 23 Oct 2002 14:43:16 GMT
NNTP-Posting-Date: Wed, 23 Oct 2002 07:43:16 PDT
> Chuck Simmons email@example.com wrote:
> >John Woodgate wrote:
> >> I read in sci.electronics.design that Chuck Simmons
> >> wrote (in <3DB5F4D1.34AD32AD@webaccess.net>)
> >> about '1523 joints', on Wed, 23 Oct 2002:
> >> >Another problem is parts marked
> >> >"Do Not Stuff" on the BOM and the schematic.
> >> Hardly surprising, I would think. The 'stuffers' don't see the BOM or
> >> schematic. Mark the *board locations* with a big red dot.
> >Our contractor does the board layout from a schematic I supply. He
> >creates the BOM from the schematic and submits the BOM and plots for
> >review. The assembler (his son) works from the BOM and the silk screen
> >on the board. The kits we give them are sorted by item number on the
> We give them an assembled PCB that was assembled by ME. If it's wrong but
> agrees with my PCB I am to blame and vice versa.
We cannot do this because we all catagorically refuse to build boards.
In my case, it is because I can't deal with fine lead pitch parts. In
any event, because we cannot obtain marked capacitors and I use about 20
different values in the design, an assembled board would not fix the
incorrect capacitor loading issue which strikes in places on the board
where I would not have thought it mattered and places where I know it is
critical with equal regularity. I don't see any value added in giving
the vendor a model when the vendor does the layout and the BOM.
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons firstname.lastname@example.org
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