[sdiy] Acrylic coating on PCBs

[sasami at blaze.net.au]

If the acrylic is of the "solder through' type, spray it on 
before you assemble the board. That way, none of the spray 
will get on components. If you have to do it after assembly, 
make sure there are no holes through which the spray could 
go. Good solder joints should be filling most of the holes. 
block the rest as appropriate.

Ken


>Hi list,
>
>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?
>
>~ Trev
>
>
>
>
>==========
>