ED I have a copy of your article very well said

> -----Original Message-----
> From: Ed Cosper [SMTP:[log in to unmask]]
> Sent: Thursday, December 02, 1999 2:52 PM
> To:   [log in to unmask]
> Subject:      [TN] Why SPC is not used more
>
> Lou has a made a very good point.  In one article I wrote for PC Fab some
> years ago on SPC, I made a similar comment.  Oh the subsequent wailing and
> gnashing of teeth!!
>
> I stated in this article that one of the first things and effective SPC
> program will highlight is incompetence. The problem is simple. Once you
> highlight a concern, someone now is expected to fix it. In many instances,
> those responsible may not be able to fix it. This presents a significant
> problem to many in our industry that may have been promoted into positions
> that they are simply not qualified for.
>
> I know many may challenge my position on this but I suspect when were
> alone
> and no one is around, we all can relate to individuals to which my
> scenario
> applies.
>
> Just my opinion and that's all it is.
>
> Ed Cosper
>
>
>
> ----- Original Message -----
> From: Lou Hart <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, December 02, 1999 5:01 PM
> Subject: Re: [TN] SPC Information
>
>
> Thanks, Bob, for your comments on SPC.  Your last point is critical - gage
> error.  If you don't have a good gage, give up right away.  By good, I
> mean
> not that it is able to determine that something does or does not meet
> spec,
> rather, that it can discriminate between parts or coupons or any test
> sample
> that actually comes off the production line.  There's a book by Don
> Wheeler,
> Evaluating the Measurement Process, that deals with this point.
>
> SPC is not a cookie cutter approach.  You need some engineering sense.  I
> dare say no one who has used SPC found a recipe for it in his or her
> industry in a book.  It's a tool.  I can go out and buy a box of wrenches,
> but that doesn't make me a car mechanic.
>
> I'm interested to hear from others on the new IPC document on SPC in
> assembly, am still eagerly awaiting my copy.
>
> Why is SPC not used more widely?  It's been around 70 years, easy to use,
> and it helps.  Hate to sound cynical, but maybe it's because with SPC any
> operator can see and prove when engineering and management has given him
> an
> incapable process.
>
> Lou Hart
>
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