> The real bad part about rivets in my painful experience is they soon go
> intermittent contact on one or both sides due to thermal cycling, soldere=
d
> well or not. Just the act of soldering nearby stresses them.
> Would not recommend through-hole rivets in any serious application.
>=20
> Soft copper wire and soft solder between layers if you must, but I sugges=
t
> rivets are a time bomb.

Wire between layers is just as much a time bomb. Someone I knew worked for =
the Canon agency when they were big in desk top calculators - these were be=
asts that used TTL and fluorescent or nixie tubes, so lots of heat produced=
..

But the PCBs were made as double sided without plated through holes - it wa=
s cheaper to have a double sided board and solder wires through holes that =
would these days be done as PTH vias. They would regularly have calculators=
 come into the workshop complaining of intermittent operation. The solution=
 soon worked out was to go over the whole of all the circuit boards resolde=
ring every joint. The thermal cycling in those things must have been horren=
dous, because they were squeezed tight for space.
--=20
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--=20
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