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February 2004

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Subject:
Re: Solder Mask Flaking
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 11 Feb 2004 10:16:15 +0200
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The key is post pumice rinse/clean/dry...the boards need to exit the
machine spotless... and poorly solderable!

Brian

Franklin D Asbell wrote:

> Tony,
>
> Do you have a pumice scrubber? We use an Hyoki aluminum oxide pumice
> scrubber prior to solder mask. Since buying this machine our problems with
> solder mask have dropped off to near nothing.
>
> We did tests some time back when we were evaluating different masks, we
> coated an 18X24 panel after pumice scrub...it came out nice and flat,
> smooth, even, etc etc etc...we could not have achieved those results without
> it I'm sure...
>
> The key is post pumice rinse/clean/dry...the boards need to exit the machine
> spotless...
>
> Franklin
>
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