Not necessarilly true Dale. I refer to Rons post below, echoed by Terry, and Delwin on other occasion. If you press and glue a flat set of ribs onto a panel into a curved caul at ambient room RH then you will end up with a significant amount of compression in the panel. RicB ............................ Also, if the ribs ends curve more after feathering, that can only come from panel compression. Either the panel is dryer than ambient room RH% on assembly, or it's pressed into a caul of tighter radius than the ribs when the ribs are glued on. Ron N ------------------- This is true Dale installing the board at 6.5% EMC (as the RC&S guys are doing as well, as it turns out at H. Steinway, if they are not misinforming you) will result in a very small amount of compression. I think 6.5 is equivalent to about thirty something percent RH which would put the panel under a slight amount of compression at DC controlled 42%. David Love
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