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October 1999

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Subject:
From:
"Stephen R. Gregory" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 4 Oct 1999 19:13:38 EDT
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In a message dated 10/4/99 4:32:08 PM Central Daylight Time,
[log in to unmask] writes:

> There are times, UK or otherwise, verbal intercourse beats that sexual.
>  Can't really think of a time, but might be considered in a later life.
>
>  Earl Moon

Moonman!

You definately have a unique way of putting things...I like it! You also have
a way of cutting to the chase...telling it like it is. Up until my present
position, I've never had a real need to understand the how and why boards are
made...every place I've worked at before, most of the stuff was consigned,
you deal with it, end of story. Just put the parts on and solder the puppies,
then ship it! But now I'm at a place where almost all of our boards are
turnkey, and I find myself in a position where in just the two months that
I've been here, I've run across at least three instances where there has been
a problem with the bare fab...and it's cost our company some pretty good
money. I'm learning, but learning the ropes the hard way.

Not to place blame, but I've found that the fab house has just blindly
followed the customer drawings no matter what they were asking for was
difficult (risky) or not. They could laminate em', put some mask on, finish
them, and get em' to pass a bare board test, and then their job was done. So
what if the things couldn't be washed without the mask flaking off? So what
if they short internally later on down the road? "Hey, we'll give you some
new boards...". You ask; "But what about the parts we already loaded? Or all
the labor we spent loading the boards? "Not our problem..." says the fab
vendor, "We'll give you new fabs, we didn't do anything wrong, we just
followed the drawings..." For some silly reason, I have a little problem with
that.

The fab vendors are SUPPOSED to be the experts, when they see something come
across their desks that could be a problem, I think that all the risks should
be communicated clearly so one can decide if there might be something
different that can be specified to minimize the risks. They know these things
better than I do (at least for now).

As it is, in addition to having to be the expert on all the assembly
processes at my company, it seems I need to know every little intricacy about
PC-board manufacturing. Not that being smart about that stuff is a bad thing,
but it would be nice to know that PCB manufacturers would help out and watch
my six-o-clock for me once inna' while...I gotta' lot on my plate as it is.

These problems have been with different PC board companies...so it's not just
one company. Do we have the bad luck of choosing the wrong fab vendors?
Pretty coincidental if we do...something to think about. I think it's pretty
much the norm. It's rare to find someplace that will go that extra step for
you, especially if you don't have orders that are in the tens of thousands
(we don't)...my opinion.

-Steve Gregory-

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