"David Griffith" wrote in message
...
Richard Knoppow wrote:
Richard Knoppow
Proportions, please?
Mostly MEK. I added a little Xylol (AKA Xylene)
because
I thought I saw it listed in an MSDS for coil dope.
However,
the MSDS for the General Cement product lists only MEK
although the thinner is Toluene. If I do it again I will
use
straight MEK. I added the styrofoam until the stuff got
to
what seems to be the right consistency, about like honey.
A word of caution to anyone considering this: when
starting this
procedure, fill the container only a third of the way with
MEK. All
that polystyrene needed to thicken it up to honey-like
consistency will
increase the volume a lot.
I have a half-pint mason jar that started with a third of
MEK. I fed it
one and a half letter-sized inch-thick slabs of foam and
it's still not
done.
--
David Griffith
--- Put my last name where it
belongs
I started with about half the jar filled with MEK.
Since I used styrofoam the displacement of the material
before it dissolves is much greater than after because so
much of it is air. The first pieces dissolved very quickly,
in fact it looked like Alka-Seltzer dissolving. Toward the
end it took a few minutes for each additional piece to
dissolve. The total amount is amazing until you remember
that its mostly air. After the first flurry of very quick
solution I added pieces about twice a day and just let it
alone between times. Of course with the cap on, MEK will
evaporate very quickly.
--
Richard Knoppow
Los Angeles
WB6KBL