In Trinidad there is a tradition to only cut bamboo on "Dark nights', otherwise 
it will quickly be destroyed by insects.   Research shows that more 
photosynthesis occurs when the moon is shining so that there is a greater 
accumulation of starch ( a favourite food of insects) when the moon is shining. 
  I think that the timing for cutting the bamboo will affact the density more 
than any differnce between North and south sides.   The cane closest to the 
nodes will be harder and denser than material taken from between the nodes.
     On a lighter note I once met a Bamboo specialist who found that it was 
difficult to construct structures with round bamboo. so he made some steel 
moulrs and grew the bamboo through these to produce square sectioned bamboo.  
It worked but was not a commercial success.
     For more technical information there is a May 1980 book " Bamboo Research 
in Asia" published by the IDRC in Ottawa

John Bridges




-----Original Message-----
From: Gibbons, John <[email protected]>
To: [email protected] <[email protected]>
Sent: Fri, Jul 9, 2010 9:21 am
Subject: [NSP] Re: Reeds


 Anthony's comments about adjacent slips from the same piece of cane made me 
onder if the north and south side of the cane would be of differing elasticity 
r density??
Variation with height is clearer, of course.
John
-----Original Message-----
rom: [email protected] [mailto:[email protected]] On Behalf Of 
rancis Wood
ent: 09 July 2010 14:00
o: Anthony Robb
c: Dartmouth NPS; [email protected]
ubject: [NSP] Re: Reeds

n 9 Jul 2010, at 13:38, Anthony Robb wrote:
> I have looked at the resources you list but have found that Mike
   Nelson's methods give by far the best results.
Hello again . . . yes, you're right. I certainly should have included Mike's 
ages at:
http://www.machineconcepts.co.uk/smallpipes/reeds.htm#chanter
I agree too that there are so many variables in all of this. Samples of cane 
rom the same batch and even the same stem can differ greatly, the density and 
ardness depending on the height the piece is cut from.
Incidentally I made a surprisingly good reed from a Coke can a month or so ago. 
urther attempts demonstrated that even Coke cans vary a lot.
Cheers,
rancis


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