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Re: shaper tip dimensions

Author: RobinDesHautbois
Date: 2011-08-07 14:01

I have experimented with shapers, but not enough to answer the specific questions you ask. I can still say this:
1. there is a huge interplay between the staple size and the shape size
2. I find it's the transition between the 10-25mm and the 25-34mm that makes the difference: in other words, how can you describe in words the belly and the lay.

I have found, for my own purposes, that a distinct difference between the belly and the lay is favourable for both vibration (I like a harsh crow) and intonation (stability on a Lorée). That is, a triangular belly and a more parallel lay rather than a gradual curve from thorat to tip. Also, the continuous curve (e.g. RDG) has the tone colour change from dark long notes (most holes closed) to brighter short notes (most holes open) on the Lorée.... might be different on other instruments. BUT, I do a modified short scrape, if you do Philly scrape, this might not hold true.

That being said, a fatter belly gives a more German sound, but they are more difficult to manage in terms of tuning and stability. Possibly, if you do the Berlinner thing and go for Püchner or Mönning, that might be less of an issue.... I can't wait to try for myself!

My favourite reeds use Kunibert Michel (you can get templates for Hortnagl shapers) 725 on Chiarugi 3 staples and 750 (for oboe d'amore) on Chiarugi 7 staples (I make oboe reeds this way). The former allows me to play easily at 440 or 442, but the latter is much lower than 440.... I have to experiment with shorter staples and shorter cane: it seems that the shorter staples alone don't suffice to bring up tuning. KM 720 and 710 appear to be more popular than the ones I use.

Best of luck and please let us know of your own findings!

Robin Tropper
M.A.Sc., B.Mus., B.Ed.
http://RobinDesHautbois.blogspot.ca/music

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