I agree with your assumption on the latter.  I think a separate list would
be assist in getting greater depth of discussions from the fabricators.  I
for one miss most of the discussions because I don't have time (nor care) to
wade through the non-fabrication questions.

I support a fabrication only discussion list.

Joe

-----Original Message-----
From: Franklin D Asbell [mailto:[log in to unmask]] 
Sent: Wednesday, October 05, 2005 12:04 PM
Subject: Re: New Topic


A good question and I am not suggesting we divulge trade secrets but for
example, we are currently producing solder mask dams down to 1 mil with .5
clearance. This not only involves controlling the solder mask exposure and
developing precisely but also drill/image registration as these are for DUT
pads of 3 mils. This is where technology is taking us today. Now continuing
this example, I need to know how to drill a 6 mil via-in-pad (as features
prevent laser drill as an option) and our supplier say's the best they can
get us to is 8 mils. Would you share some knowledge for other knowledge? How
many assembler and end user participants in TechNet can answer the 6 mil
drill question?

And for those of you taking notes, these are hypotheticals (except we can
indeed provide 1 mil solder mask dams).

I don't ask very many fabrication questions on TechNet anymore as I rarely
receive a response. Is this because they don't know? Are the questions
beyond the capabilities of the majority of TechNet? Or the right people are
not seeing the question? I believe the latter.

Just more things to ponder...

Franklin



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jim Henderson
Sent: Wednesday, October 05, 2005 12:29 PM
To: [log in to unmask]
Subject: Re: [TN] New Topic

With the auction of a United States PCB fab shop happening on a weekly
basis, I wonder how much information a shop is willing to share can be
attributed to the lack of questions or answers for that matter we are seeing
here.  (Trade secrets stuff)

Jim Henderson
Colonial Circuits, Inc.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Whittaker, Dewey
(AZ75)
Sent: Wednesday, October 05, 2005 12:05 PM
To: [log in to unmask]
Subject: Re: [TN] New Topic


There have been some real whoppers told already on this forum. I don't know
if we want to encourage the participation of additional fabricators. Dewey


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Franklin Asbell
Sent: Wednesday, October 05, 2005 9:00 AM
To: [log in to unmask]
Subject: [TN] New Topic

How can we increase the participation of pcb fabricators to the TechNet
forum?

Franklin

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