Methanol and wetter water

[Richard Moody]

Since water is added or since the Vodka is 50/50 grain alcohol and
water (at 100 proof) yes water is probably the main shrinking
agent.  If denatured acts differently than grain alcohol on felt I
don't know.  But why denatured was specified mixed 50/50 water
instead of just 100 proof vodka I don't know. Besides I heard that
denatured alcohol is really grain alcohol with a little methanol
or "wood" alcohol added to make it undrinkable.  Perhaps because
denatured alcohol is common around the shop.  It dissolves
shellac, and is needed for alcohol soluble aniline dyes and used
in alcohol lamps. But what advantage it has over grain alcohol I
don't know unless it comes at 190 proof.  We need a chemist to
settle the issue or our felt man     ---ric

----- Original Message -----
From: Paul Chick (EarthLink) <tune4@earthlink.net>
To: Pianotech <pianotech@ptg.org>
Sent: Monday, October 28, 2002 7:56 AM
Subject: Re: Methanol and wetter water


>
> ----- Original Message -----
> From: "Richard Moody" <remoody@midstatesd.net>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Sunday, October 27, 2002 11:04 PM
> Subject: Methanol and wetter water
>
>
> > >     That vodka can be substituted for the denatured alcohol
and
> > water is possible.  It depends on denatured shrinks felt
better
> > than grain or ethyl alcohol.
>
>
> Richard
> Is it the water that is the shrinking agent or the alcohol?   I
was under
> the impression that the water did the shrinking and the alcohol
was just a
> convenient medium to enhance absorption.  Once in the bushing
cloth, the
> water can be left to dry naturally or some heat may be applied
to speed
> drying and in some cases increase the shrinkage, like drying
your wool
> sweater-air drying so it fits you again or heat drying so it
will fit your
> cat.
>
> Paul Chick
>
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