> By the way you sent this thru last week & I didn't have time to say it > was very well described & if one takes time to really anaylisze the > dynamics of this rib design the vibrational effiecncy of this shape rib > seems ... transparent. That's the idea. Doing it's job with high efficiency, without adding unexpected and unwanted secondary effects. > The way you described it made it crystal clear in my thought process > & I hope others. I catch on quick after a long time! Yea, me too - sometimes. > What about using the same approach with a solid rib. No reason not to. The feathering isn't an artifact of lamination. It'll work the same in a solid rib. The reasons for laminating include ease of crown machining, accuracy, and both higher and more uniform statistical average MOE from batch to batch. > Vibrational waves emanating at the bridge & radiating outward is all > s.o.p. thought and this rib design whether it be laminated or not seems > to aid the idea of the soundboards center as the starting point for > vibration & also showing the most movement. > > Dale Whatever. I have no way of knowing what the little waves are doing, and wouldn't know what to do about it if I did. The structural reaction alone is impressive to me, and the quality of sound produced indicates to me that either something good is happening, or that something detrimental is not. I'm a definite fan. Ron N
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