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Sender:	TechNet <[log in to unmask]>
X-To:	John Parsons <[log in to unmask]>
Date:	Wed, 21 Feb 2001 11:40:42 -0500
Reply-To:	"TechNet E-Mail Forum." <[log in to unmask]>, Steve Telgen <[log in to unmask]>
Subject:	Re: FAB - Reality Check, Tooling Holes and Profiling
From:	Steve Telgen <[log in to unmask]>
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In-Reply-To:	<20010221161742.BBVQ2621.priv-edtnes11-hme0.telusplanet.net@johnpar>
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With a reasonably competent operator and well-maintained spindles, you
should able to +/-.005 easily.  We do all the time, actually, it's our
default when no tolerance is supplied.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of John Parsons
Sent: Wednesday, February 21, 2001 11:16
To: [log in to unmask]
Subject: Re: [TN] FAB - Reality Check, Tooling Holes and Profiling


Steve,

And with pinless routs you are having no problems maintaining the
+/- 0.005" tolerances seen on many of todays fab drawings?  Or do
you not see tolerances spec'd this tight?

Regards
John Parsons

> 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.

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