Hi Doug,

We use Techspray Wondermask WSOL. They say that this stuff is safe for ION
beds and so far I have to agree, we're closed loop and have not run into
any issues with our DI beds. The only thing I've run into is a pink bathtub
ring in the wash tank, but it scrubs away with a stiff bristle brush.

Steve

On Tue, Sep 15, 2015 at 10:39 AM, Douglas Pauls <
[log in to unmask]> wrote:

> A quick question for you all.  Are any of you using a water soluble masking
> material, like a Kester Wondermask, in your wave solder or selective solder
> operations?  If so, what are you using?
>
> Doug Pauls
> Principal Materials and Process Engineer
> Rockwell Collins
>
>
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