Dewey
I am beginning to think we are about to have another 'consultant' in our
midst.
David A. Douthit
Manager
LoCan LLC
Whittaker, Dewey (AZ75) wrote:
>I was referring to Huxley, but Rather( as in Dan )than look it up I trusted
>my sources, which is my bad memory for names. Since we are speaking of
>names, you used mountain in reference to me. If that was because some of the
>things I have said peaked some ones interest, I will take the comment for
>granite.
>When I use the term it is Mountain Dew in conjunction with Doug Pauls. I
>have been told he is going cold turkey from it so I may have to come up with
>another highly respectful nickname.
>Dewey
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]]On Behalf Of Brian Ellis
>Sent: Tuesday, September 21, 2004 11:50 PM
>To: [log in to unmask]
>Subject: Re: [TN] (2)PWB Conductive Contamination Under Solder Mask;
>What Can ...
>
>
>Unfortunately, Mountain Dewey may have a slightly cynical way of
>expressing it, but he is 1000% right, in essence. Commonsense no longer
>prevails. How many time have you seen messages here like "Is there an
>IPC standard on how I should hold my willy while urinating?" or "Is a
>mil the same as a mile and a millimetre" or "I'm wave soldering, which
>flux should I use?" or "Is a short circuit between two tracks a no-no?"
>
>However, he was wrong in one respect, it was Aldous Huxley who predicted
>psychological conditioning in technological spheres when he wrote Brave
>New World, the same year as when I was born (no connection). Adolph H.
>wrote Mein Kampf.
>
>Brian
>
>Ahne Oosterhof wrote:
>
>
>
>>Ouch, empty a whole bottle of Mountain Dew, and pry that tongue out of the
>>cheek.
>>Ahne.
>>
>>
>>-----Original Message-----
>>From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey
>>
>>
>(AZ75)
>
>
>>Sent: Thursday, September 16, 2004 8:42
>>To: [log in to unmask]
>>Subject: Re: [TN] (2)PWB Conductive Contamination Under Solder Mask; What
>>Can ...
>>
>>In a former life(last week), I would have responded to the question of
>>
>>
>what
>
>
>>are the younger people going to do when the older knowledgeable people are
>>gone( passed on to that big TechNet in the sky, which we are just dying to
>>get in to) by saying it would probably lead to a lot of "spirited"
>>
>>
>debates.
>
>
>>In reality these days of 6 Sigma, Black belts, cross-functional teaming
>>
>>
>and
>
>
>>integrated supply chain mentality, it is no longer a requirement to have
>>technically competent people, because it is not important to have the
>>intuitive right answer. It is only important that everyone has agreed to
>>
>>
>the
>
>
>>same answer. The right answer may not be cost-effective or would require
>>
>>
>too
>
>
>>much technical support or understanding and that's not a path they want to
>>go down. If after 6 months the problem still exists, the Corporate
>>
>>
>mind-set
>
>
>>of Globalization and strategic initiatives will deem the problem and it's
>>associated activities as not one of it's core competencies and pursue
>>off-loading or outsourcing it.
>>Adolph Huxley was right.
>>Dewey
>>
>>-----Original Message-----
>>From: TechNet [mailto:[log in to unmask]]On Behalf Of Mike Fenner
>>Sent: Wednesday, September 15, 2004 6:39 AM
>>To: [log in to unmask]
>>Subject: Re: [TN] (2)PWB Conductive Contamination Under Solder Mask; What
>>Can ...
>>
>>
>>Same as us: The young folks will be surprised to find they are now the old
>>folks and wishing they'd paid more attention ?
>>
>>Regards
>>
>>Mike
>>
>>
>>-----Original Message-----
>>From: TechNet [mailto:[log in to unmask]] On Behalf Of - Bogert
>>Sent: Wednesday, September 15, 2004 10:39 AM
>>To: [log in to unmask]
>>Subject: Re: [TN] (2)PWB Conductive Contamination Under Solder Mask; What
>>Can ...
>>
>>
>>September 15, 2004
>>
>>Thanks for the information and history lesson. What happens in the world
>>when all of us old folks are no longer here?
>>
>>PS can you give me details on your book and where to purchase it? Thanks
>> ----- Original Message -----
>> From: Brian Ellis<mailto:[log in to unmask]>
>> To: [log in to unmask]<mailto:[log in to unmask]>
>> Sent: Tuesday, September 14, 2004 1:55 AM
>> Subject: Re: [TN] (2)PWB Conductive Contamination Under Solder Mask;
>>
>>
>What
>
>
>>Can ...
>>
>>
>> You must be aware that using abrasive brushing (Scotchbrite (R) or
>> slurry) is a major cause of solder dewetting. Micro-particles of
>> abrasive get implanted in the metal, which is even swaged over some of
>> them. I have PROVED this time and time again. I published this in a
>> paper 'New Aspects on the Solderability of Printed Circuits' in the
>> Technical Proceedings of Inter/Nepcon '69, in Brighton, as well as in my
>> book (pp. 76 ff). It is amazing that a problem that was identified 35
>> years ago is still largely ignored! :-(
>>
>> Brian
>>
>> Susan Mansilla wrote:
>> > Hi Mike and All
>> > I am familiar with the abrasive wheel cleaning processes. but those
>>
>>
>are
>
>
>>done
>> > AFTER the tin/lead has been stripped. The response I got indicated
>>
>>
>that
>
>
>>the
>> > abrasive was used on the Tin/Lead deposit, which didn't follow my idea
>>of a
>> > possible process flow.
>> > Some PCB fab shops continue to use a "Scotch Brite" style of
>> > abrasive wheel or brush as a final surface prep operation prior to
>> > soldermask application.
>> > Susan Mansilla
>> > Robisan Lab
>> >
>> > ---------------------------------------------------
>>
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>>
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