19 Nov
2001
19 Nov
'01
6:19 p.m.
On Nov 19, 21:04, ajp166 wrote:
I don't remember that foam as being conductive.
Most conductive foams
tend to shred, those bits are not kind to the electronics.
Agreed :-) The brown stuff isn't much nicer after 15-30 years. I suspect
someone before me had replaced foam that lost its resilience, and thought
conductive foam would be better in some way.
From: Pete Turnbull <pete(a)dunnington.u-net.com>
>I've been cleaning up my recently-acquired PDP-8/E, and I've had to
remove
>the plastic foam from the inside of the lid, which
was fairly horrible.
> I'm not sure what best to replace it with
Thanmks to everyone who replied. I'll just use ordinary high-density foam.
It's much cheaper than a couple of square feet of good quality conductive
foam, which would be a bit thin anyway.
--
Pete Peter Turnbull
Network Manager
University of York
30 Nov
30 Nov
6:30 p.m.
Pete Turnbull wrote:
On Nov 19, 21:04, ajp166 wrote:
Good choice. Conductive foam (the black stuff at least) will also loose
it's integrity
over time and crumble. Especially when subjected to repetitive
mechanical stress. It
is not designed to last.
Mike
I don't remember that foam as being
conductive. Most conductive foams
tend to shred, those bits are not kind to the electronics.
Agreed:-) The brown stuff isn't much nicer after 15-30 years. I suspect
someone before me had replaced foam that lost its resilience, and thought
conductive foam would be better in some way.
From: Pete Turnbull
<pete(a)dunnington.u-net.com>
>I've been cleaning up my recently-acquired PDP-8/E, and I've had to
>
remove
>the plastic foam from the inside of the lid,
which was fairly horrible.
>I'm not sure what best to replace it with
>
Thanmks to everyone who replied. I'll just use ordinary high-density foam.
It's much cheaper than a couple of square feet of good quality conductive
foam, which would be a bit thin anyway.
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