I'm no sawyer, just a woodworker, but your experience conflicts with mine. I don't think your example of a curly wooden dowel rod is a fair example. Because of the curved surface, there is only a tiny amount of quartersawn wood displayed, and actually, there is also an extremely tiny bit of flatsawn material displayed - most of what is seen is rift in varying degrees. A fair test would be a turning square that is well quartersawn on two faces and well flatsawn on two faces, sanded smooth on all faces.
But, that won't help you sell your wood. Luthiers look at the radial (quartersawn) and tangential (flatsawn) shrinkage values for a particular species of wood, take into account the width of the instrument back, and make a decision as to whether flatsawn material is stable enough to withstand the test of time. No one wants to spend 100 or more hours crafting a gorgeous instrument that cracks in the first winter. Also, flatsawn guitar sides tend to ripple when being bent. And finally, quartersawn wood provides a perfect mirror bookmatch that cannot be accomplished in flatsawn wood - not even in the thinnest sliced veneers. So, even if you sincerely believe (or know) that flatsawn curly Maple shows its figure better than quartersawn wood, you still have a vast majority of luthier/buyers that only want your quartersawn material.
But, I'll throw you a curve ball: 5/4" x 8-1/8" x about 26" planks of perfectly flatsawn wood - where the "cathedrals" or better yet "puddles" are right down the middle of the board, are perfect for laminated guitar necks. Cherry, Walnut, and Soft and Hard Maples - especially figured material - that is free from defects and fits the size and grain orientation that I mentioned are going to be of interest to luthiers (as well as to CNC companies specializing in guitar parts.) Note that he overall length of about 26" would be for completely dried material, with no end checking, because that length is required to get a pair of nested neck blanks out of the board. Some guitars (bigger headstocks, longer scale lengths) would need longer material, so it might be safer to supply 30" to 32" lengths as laminated guitar blank candidates.
You should talk to a soundboard tonewood supplier before you cut the White Cedar. If it has the characteristics to make great soundboards, then you need to be working from split faces, more like fat shingles (or bolts) than slabs. Otherwise, you may end up with more runout that luthiers will accept, and a pile of potential soundboards may become kindling. Actually you need to talk with a soundboard manufacturer - someone that actually has experience going from log form to guitar tops.
Hope this helps,
Dennis
_________________ Dennis Leahy Duluth, MN, USA 7th Sense Multimedia
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