[sdiy] Carbon foam, the revenge

[KA4HJH]

>    * Carbon impregnated high density open-cell polyurethane foam,

This is the problem. I don't know what the case is these days but as any
MG-1 owner knows polyurethane from the 70's and 80's has a way of
decomposing. It also effects loudspeaker surrounds from the same period.

At 1:42 AM +0200 5/7/08, Magnus Danielson wrote:
>As I was foofing about the labbench just now, I discovered that one of the
>antistatic tube (it's antistatic properties can be discussed as with all older
>IC tubes) the end-plugg had deteriarated, so when I pulled it, it broke loose.
>The outer part which used to be hard had just became brittle and the inside
>soft suspension was not providing much of a resitance either... it just barely
>was sitting there... but just a little force caused them to break.

Sounds like a loss of elastisizer.

>It is obvious that old packing material break and fail. If the components have
>any value, replace.

We'll be playing this game for a long time. Do they make IC rails out of hemp?

-- 

Terry Bowman, KA4HJH
"The Mac Doctor"