[sdiy] Acrylic coating on PCBs

[Tony Clark]

> For my TR909 clone project I've assembled two PCBs that contain all of the
> drum voice circuits. The boards do not have any protective coating (i.e. the
> tracks have just been plated and that's it) and I therefore wish to protect
> the tracks from oxidisation etc. I have some acrylic spray coating which is
> intended for protecting boards. Any thoughts as to whether or not this is
> good stuff to use? Apparently this coating can start to form a yellow
> appearance after a period of time, and possibly cause problems with IC
> sockets and other mechanical components. I'm not really bothered about
> keeping the boards working forever as I intend to get some better ones done
> 'sometime' :) . Just want a short term solution.  Thoughts?

   Sure, just use a clear polyurethane paint.  I've used it quite 
sucessfully on my company's tranducer boards to eliminate condensation 
drift issues.

   Tony

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