クラヴィコードのブリッジピンのマーキングの方法はいくつか考えられますが、なるほどと思う方法がありましたので、自分自身の覚え書きもかねて紹介します。
from the web page of the Russell Collection of Early Keyboard Instruments
The Pinning of the Bridge
Lance Whitehead in his paper to the First International Clavichord Symposium held in Magnano in 1993* showed that the clavichords of Hass were designed in such a way that a stick with regularly-spaced markings was used to mark the position of the pins on the 8' and 4' bridges. This stick was held in a position perpendicular to the spine of the clavichord and moved along over the area covered by the bridge on the soundboard. It appears that a line was drawn along the top of the bridge, probably while the top of the bridge was still flat and before it was given the typical slope. This line thus had a smooth shape which followed the shape of the bridge itself. The intersections of the markings on the stick with this smoothly-shaped line were nicked on the top of the bridge giving the position of each bridge pin in succession. The bridge pin holes were then drilled at the position of the nicks, the top of the bridge was sloped and the bridge pins inserted into the regularly-spaced holes thus positioned.
*See: Lance Whitehead, 'The laying-out of Hass clavichords', De Clavicordio. Proceedings of the International Clavichord Symposium/Atti del congresso internazionale sul clavicordo. Magnano, 9-11 September 1993, edited by Bernard and Susan Brauchli and Alberto Galazzo, (Istituto per i Beni Musicali in Piemonte, Turin, 1994) 111-21.
低音から高音までそれぞれの弦の間隔で印をつけたスティックをスパインに直角に保持し、ブリッジの上を移動させてブリッジ上面に引いたラインとスティックの印との交点に印を付けて行くとそれがピンの位置になる、ということのようです。棒に三角定規のような板を取り付けておけば、スパインに平行に保持しながら滑らせて行くことができそうです。大型の楽器では弦の間隔は均等ではなく低音は広く高音ほど狭くなっていますが、その位置を正確にスティックに移すことができれば、かなり精度よくピンの位置をマーキングできそうです。
from the web page of the Russell Collection of Early Keyboard Instruments
The Pinning of the Bridge
Lance Whitehead in his paper to the First International Clavichord Symposium held in Magnano in 1993* showed that the clavichords of Hass were designed in such a way that a stick with regularly-spaced markings was used to mark the position of the pins on the 8' and 4' bridges. This stick was held in a position perpendicular to the spine of the clavichord and moved along over the area covered by the bridge on the soundboard. It appears that a line was drawn along the top of the bridge, probably while the top of the bridge was still flat and before it was given the typical slope. This line thus had a smooth shape which followed the shape of the bridge itself. The intersections of the markings on the stick with this smoothly-shaped line were nicked on the top of the bridge giving the position of each bridge pin in succession. The bridge pin holes were then drilled at the position of the nicks, the top of the bridge was sloped and the bridge pins inserted into the regularly-spaced holes thus positioned.
*See: Lance Whitehead, 'The laying-out of Hass clavichords', De Clavicordio. Proceedings of the International Clavichord Symposium/Atti del congresso internazionale sul clavicordo. Magnano, 9-11 September 1993, edited by Bernard and Susan Brauchli and Alberto Galazzo, (Istituto per i Beni Musicali in Piemonte, Turin, 1994) 111-21.
低音から高音までそれぞれの弦の間隔で印をつけたスティックをスパインに直角に保持し、ブリッジの上を移動させてブリッジ上面に引いたラインとスティックの印との交点に印を付けて行くとそれがピンの位置になる、ということのようです。棒に三角定規のような板を取り付けておけば、スパインに平行に保持しながら滑らせて行くことができそうです。大型の楽器では弦の間隔は均等ではなく低音は広く高音ほど狭くなっていますが、その位置を正確にスティックに移すことができれば、かなり精度よくピンの位置をマーキングできそうです。
おわびに現在製作中の楽器の紹介を
