Would Permali ( http://www.permalideho.co.uk/permali.html ) fall into
this category? This is the material my border pipes are made from, and I
believe the maker, Brian Gumm, pioneered the use of it for pipes, though
some others experimented after him. Brian was a carpenter at a colliery
near Ashington and became acquainted with the material as it was used in
the pit.
Ian
David Cockey wrote:
A possible alternative is acrylic impregnated wood. I haven't seen any
reports of it used in a musical instrument although the second website
below has a speculative quote from Woodwind Quarterly, August 1993. It
is becoming popular for higher end woodworking tool and knife handles.
Reports are it can be worked with conventional woodworking tools.
http://www.woodsure.com/
http://www.stabilizedwood.com/
----- Original Message ----- From: <rosspi...@aol.com>
To: <john.da...@hmhpub.com>
Cc: <nsp@cs.dartmouth.edu>
Sent: Sunday, September 27, 2009 11:53 AM
Subject: [NSP] Re: ivory pipe tone
Dear John,
Julia has responded re a blind test I carried out with blackwood and
ivory which was inconclusive but depended on treating the blackwood
or any other hardwood with impregnated oil to increase the density to
match as far as possible the density of the ivory. It never has the
same effect as the ivory has on the tone which is rich in harmonics
that have been absorbed by the softer wood even if it has been
impregnated.
The nearest equivalent in tone to ivory is acetal which seems to have
the same effect in not absorbing high harmonics so giving a rich
clear and loud tone. Having said that it is worthwhile trying various
woods (the sorts that would make good xylophones) that have been
treated with oil to see what effect is produced that may match the
ivory or be preferred. That would save on elephants.
Colin R
-----Original Message-----
From: Dally, John <john.da...@hmhpub.com>
To: nsp@cs.dartmouth.edu <nsp@cs.dartmouth.edu>
Sent: Sat, 26 Sep 2009 18:36
Subject: [NSP] ivory pipe tone
Does ivory deliver a different tone than ABW or other woods
traditionally used for NSP? Don't get the wrong idea, I'm all for
elephants, even invisible ones.
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