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nafex - Re: [nafex] Mist Propagation Alternatives

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  • From: "del stubbs" <pinewoodel@hotmail.com>
  • To: nafex@yahoogroups.com
  • Subject: Re: [nafex] Mist Propagation Alternatives
  • Date: Wed, 07 Feb 2001 01:33:43 -0000


Tom, you remind me of another type. A fellow woodworker made me a
copy of
an old French hygrometer,elegantly simple......take a thin strip of wood,
can be 1/4" by 1/16"by 3"..... or a similar proportion 3 feet long that
can be viewed at 100 paces. Glue an identical sized strip of wood to it with
the grain absolutly opposite... going crossways. It uses the dramatically
different directions of expansion in a hygroscopic material like wood, and
of course it gets no finish! The greatest expansion is tangental to the
tree i.e. the arc of the growth rings moves twice as much as the radiius.
Fasten one end and the other end will arc considerably back and forth.
Another great tid-bit about wood is tylosis (sp?), the marvelous
membranes
that block liquid in quercus alba- white oak so that they can be used for
wine etc. Now red oaks have the opposite characteristic, take a stick of
red oak say 2 feet long, stick one end in dish soap and blow on the other,
you won't believe the foam! Dat's vy dey don't use red oak fer
casks......Mn. Del


>From: Tom Olenio <tolenio@sentex.net>
>Reply-To: nafex@yahoogroups.com
>To: nafex@yahoogroups.com
>Subject: Re: [nafex] Mist Propagation Alternatives
>Date: Tue, 06 Feb 2001 14:46:21 -0500
>
>Hi Gordon,
>
>I bet you thought I was nuts making my own homemade hair hygrometer, but I
>found the plans for it online. Things never change;
>
> [Image]
>
> http://www.allstar.fiu.edu/aero/Experiment15.htm
>
>Now I need to find a 9" hair.... good thing I have nieces.
>
>regards,
>Tom
>--
>Thomas Olenio
>Ontario, Canada
>Hardiness Zone 6a
>
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