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October 2002

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From:
"Morse, Carrie" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 8 Oct 2002 15:36:37 -0400
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Another reason is the Customer wants it done.
Believe it or not, some customers want this process in place to help
prevent defects from ending up at their door and they believe the
process works.

In addition, new products are often different than previous products,
especially for CM's.  The first article is the opportunity to take a
look at the first boards off the line from an "entire process" standpoint.
Anything can go wrong.

-----Original Message-----
From: Steve Thomas [mailto:[log in to unmask]]
Sent: Tuesday, October 08, 2002 1:38 PM
To: [log in to unmask]
Subject: Re: [TN] First Article Buy-off Process for SMT & Wave Solder


I know of 3 reasons.  The oversimplified rationale is that it's easier to detect mistakes in someone 
else's work. It's the same reason that I like to have someone else proofread docs that I originate after I've 
proofed them a time or two myself, even after running a spellcheck. 

It also guarantees that two sets of eyes have witnessed the results of the operation for better coverage.

Finally, it's the elimination of the opportunity for a conflict of interest, or the "fox watching the henhouse".  

For stuff like medical products assembly, GMP REQUIRES that any verification of a process step has to be 
performed by someone other than the individual that performed the step, whether it's setup, assembly, repair, 
etc.  If you can't verify the process steps that can contribute to defects, you have to inspect the product itself.

I'm sure similar adaptations of the same basic practice have been applied to military, aerospace, etc., although
I haven't worked in those fields personally.
 
-----Original Message-----
From: Poh Kong Hui [mailto:[log in to unmask]]
Sent: Tuesday, October 08, 2002 8:54 AM
To: [log in to unmask]
Subject: [TN] First Article Buy-off Process for SMT & Wave Solder


Hi Technetters,

I would to share some experience with you all.

I  have been working for 5 companies. I realize that every
company that I worked for, has a buy-off system; so called
the first article buy-off before releasing the either a SMT or
wave soldering line for mass production.

I am rather curious why the people who are managing the
lines cannot perform their own self check, but rather
depends upon someone to check their work and to ensure
they loaded the right to the machine or to the boards.

I would like to hear your opinion about this system as I find it
rather stupid and it is wasting time.

Poh

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