The biggest got-ya is contamination of the coating itself from previous
assemblies, if they are not perfectly clean. This would be most
noticeable with particulate contaminants, where there is a risk of
foreign bodies from one assembly floating around in the liquid. However,
this would be benign compared with the possibility of invisible
dissolved contaminants, especially if they were ionic, which would
accumulate with time. I'd recommend very frequent changes of the coating
liquid.

Brian

Joseph H. Smith wrote:
> Fellow technetters.
>
> Anyone out there have experience with 'manually' dip coating conformal coat.  I have never done the dipping coating process.  Machine spray and hand spray I have done.  The concept sounds simple enough but I was looking for advice on process got ya's or issues to watch for when doing the dipping.  Our customer is requiring the dipping process and currently doesn't wish to spend the money on more automated equipment.
>
> Andrew Kettlewell
> Sr Process Engineer
> Sypris Electronics
> Tampa, Fl
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