Ed,
Get a fixer. Also, the majority of the problems we run into are lack of
maintenance controls, not only with the chemistry but more so with the
mechanics of the equipment. We also have Electrochem audit our processes
on a quarterly basis, after all it's their job if they want our
continued business.
Rick
GTC

>-----Original Message-----
>From:  Ed Cosper [SMTP:[log in to unmask]]
>Sent:  Wednesday, March 29, 2000 6:24 AM
>To:    [log in to unmask]
>Subject:       [TN] Shadow direct metalization process
>
>Hi all,
>
>Many shops have installed and are running Electrochemicals shadow process.
>We have been running it over 6 years now. However, as hole sized get smaller
>we are seeing more voids than usual. The actual cause of the voids is
>somewhat of a debate at this time. The effect of not having a fixer module
>on our shadow line seems to be primary focus at this time. Perhaps those of
>you who are using shadow and are drilling .0135 holes would care to share
>your experience along these lines. What is your opinion on a fixer module.
>Is it necessary?  If we install one, do you think it will help reducing
>voids in small holes.
>
>The supplier highly recommends it but I never loose sight of the fact that
>they are in business to sell equipment. So, without any intention of
>slighting our suppliers suggestions ( who I find the majority of the time
>correct is their recommendations) , I always inquire with folks actually
>using the products before I decide to endorse spending any money that may
>not be necessary.
>
>
>All comments are appreciated.
>
>Ed Cosper
>
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