Robert,
If the ink is fully cured it may be next to impossible to remove without
attacking the soldermask. Do you need
to remove the entire silkscreen or just certain areas?
You may be better off contacting your board manufacturer
and have him apply soldermask over the existing silkscreen and re apply the
new rev of the silkscreen that you need. You can contact me offline if you
would like once you get more details.

Tony Steinke
[log in to unmask]

----- Original Message -----
From: "Furrow, Robert Gordon (Bob)" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, April 22, 2002 12:44 PM
Subject: [TN] Removal of Cured Nomenclature Ink


> Hi TechNet,
>
> I have been asked what chemical(s) would be required to remove cured
> nomenclature ink (also known as silkscreen) from a bare board without
> damaging the board itself. I am assuming it is an epoxy ink, but I do not
> know the exact formulation. Any input is appreciated. I should know the
> exact formulation of the applied nomenclature ink tomorrow, but thought
that
> maybe there is a generic answer.
>
> Thanks,
> Robert Furrow
> Printed Wiring Board Engineer
> Supply Chain Networks
> Lucent Technologies
> 978-960-3224    [log in to unmask]
>
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