Author: cjwright
Date: 2012-12-04 02:44
Yes, terracing would be correct.
Check Martin's diagram here:
The first oval would start where the scrape begins and goes all the way to the heart. The second oval would start around the 50 and go all the way to the heart. The third oval would go up and maybe even blend into the heart a little bit.
While Martin's diagram has a lot of measurements, I think a lot of the back and heart measurements are within .05mm of variance, according to the gouge and shape, so don't take them too literally.
Regarding the rails, it depends on the gouge. If the sides of the gouge are extremely thick, you WILL have to thin the rails. If you overlap correctly, make sure to narrow the left rail first (inner rail). A good solid gouge however will allow you to leave some decent rails on both sides.
Oboi, I have no cliff, and neither does Martin. It's perfectly avoidable with slow, patient knife technique. This is not to say that you can't have a cliff. I've seen many professionals have one, but they've been very minor and smooth.
The cliff cuts off a lot of vibrations from the heart to the back, and consequentially the bottom octave will be difficult to get until you blow really hard, by which time the tone has no doubt distorted. Once you cut off those vibrations you have no chance at the top C crow as well, so you're really left to a single C, and a simplified tone, lacking complexity and depth. The only time this isn't the case is when the reed is popsicle stick thick and still has little definition anywhere.
Blog, An Oboe In Paradise
Solo Oboe, Thailand Philharmonic Orchestra
Post Edited (2012-12-04 02:45)
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