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December 2000

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Subject:
From:
"Joe V. Ottesen" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 15 Dec 2000 08:21:16 +0100
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Julien Bouchard wrote:

> Hi everybody,
>         We recently start to use an ultrasonic stencil cleaners for our stencils.
> It' work well, but after some time, we saw a lot of fiducial that the black
> epoxy have been partially or totaly remove.  I want to know if someone had a
> similar problem with a stencil cleaner. Also, we looking for a material to
> repair the black epoxy of the fiducial ( for now we use ink pen, but we need
> to redo the job everytime we change of product). Our stencil are from UTZ
> and our stencil cleaner is from SMART-SONIC.  Thank you.
>
> Julien Bouchard
> Matrox - Process Engineer
> Email : [log in to unmask]
>
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Hi,

    I have also seen the problem, with the same cleaning equipment.
    To repair the fiducial and get the best contrast we use a Loctite 4501 kit.
    Today our stencil deliverer is pigmenting the metal in the half etched fiducial mark and
it works like a dream.


--
best regards
Joe Vella
[log in to unmask]
Website      http://www.bbelectronics.dk

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