16 Aug
2019
16 Aug
'19
11:13 a.m.
Dwight,
I spot check boards. I lack sufficiently sensitive instruments to measure
actual thickness (even on a surface plate, it's the same for ENIG as hard
gold with an 0.0001" indicator) but ENIG won't stand up to a few swipes
with an ink eraser, whereas hard gold will stand up to it no problem. The
main issue I've seen, in buying other people's products and projects, is
board houses passing off ENIG as hard gold (and charging for it!) or
claiming they're using "extra heavy ENIG" -- which of course isn't a
thing,
because ENIG is an ion swap!
Thanks,
Jonathan
On Fri, Aug 16, 2019 at 1:14 PM dwight via cctalk <cctalk at classiccmp.org>
wrote:
I was wondering, does anyone check the thickness of
the gold plating
anymore. Years ago, working at another large company, we saw quite a bit of
cheating on this.
Trust but verity.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Dennis Boone
via cctalk <cctalk at classiccmp.org>
Sent: Friday, August 16, 2019 8:46 AM
To: cctalk at classiccmp.org <cctalk at classiccmp.org>
Subject: Re: GW-DEC-1: A New DEC Prototyping Board
I've gotten the distinct impression that US
board houses really are
only interested in government/military/aerospace work. I've often
wondered what it would take to set up a modern "no human interaction"
line and if one could be even a little competitive with the Chinese
on it.
Based on a couple of youtube videos I've seen in the last year (sorry,
don't have links), I'm not sure it's entirely fair to describe the
Chinese board house process as "no human interaction". I mean, sure,
web form submission, but they seem to have a lot of "engineers" checking
designs, and factory workers, and...
De