> My question is are these flat laminated pieces cut with a crown > in them or are you crowning the ribs in a curved caul. I know this was > discussed some time back but hey I don't recall it. If they're laminated > in a curve aren't they indeed more of a true arched rib (or arched beam) > than a solid piece of spruce rib stock with a machine cut curve. In the > rib glued in a curve the ribs the grain is indeed in an arch even if it > was made thick enough to cut the bottom of the rib flat so as it had more > material in the middle than on the ends. With a rib laminated in an arch > config. it's also possible to have a rib of uniform dimension (if thats > desireable). Is a rib you make from a single piece of wood with curved grain an arch? The laminated rib isn't either because the laminations are glued together. As long as the glue holds, it's a solid piece of wood. Ron N
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