"--exray--" wrote in message
...
jakdedert wrote:

You can tin the edge of the PCB and avoid this for the most part.

-Bill


Probably, but the object was to eliminate heating the copper board.
Other
coatings would work, as well. Zinc chromate primer is what they use in
aircraft construction.

jak

I jumped in at the "make them removable" part. Doing a bit of tinning
wouldn't really qualify as heating the board enough for the copper to
peel up.
Actually I think that would be preferable to "paint on" coatings that
might flake/chip around the screw holes in this case.
But we have now made a simple everyday PCB board box into a home project
that meets FAA specs.
:-)
-Bill

LOL...but, naah...the original idea would work with just a quick squirt of
z.c. primer (from a can) on the inside of the aluminum angle stock, I
guess...not that much trouble, in order to avoid further troubles down the
line. If the assembly never got wet--or stored/used in a humid
environment--those problems would likely never show up. OTOH, probably best
to avoid problems in the first place.

jak