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February 2001

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Subject:
From:
Steve Telgen <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 21 Feb 2001 09:35:41 -0500
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text/plain
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John, we use pinless routing with '80s vintage Excellon Mark IV's.  A lot of
today's designs don't leave a lot of room for additional tooling, and
pinless saves on set-ups.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of John Parsons
Sent: Tuesday, February 20, 2001 12:04
To: [log in to unmask]
Subject: [TN] FAB - Reality Check, Tooling Holes and Profiling


Colleagues,

What is the consensus on the use, or addition of NPTH tooling
holes to designs for routing in order to hold +/- 0.005" tolerance.
Just had a discussion with a new customer who said that he has
never had tooling holes added to his designs and has had no
tolerance issues with past vendors.

So, what is it, are we in the dark ages here?  Please tell me what
you do.

Regards
John Parsons

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