John H; "Most SB cracks start out as compression set or compression failure (cell damage)." John- since all of the cracks I have seen in sounding boards have ran with the grain and started out on the top of the board shouldn't there be an explanation other than compression failure that started the crack?. It seems to me that if 'compression' failure caused the crack that it would appear on the bottom of the board first (I am talking theory, not real life). I would assume that if 'compression failure caused the crack that the ribs glued to the underside of the board would keep that portion from showing any cracking until the top side had split away completely. After all if the top of the board is the outside of the APROX 60' circle, and the bottom of the board is at a point inside of the circle, isn't the bottom of the board at compression and the top at extension ? John most of the cracks I see (Southeast) are at glue lines and are between two distinctly different grained panels, would compression failure play a part here as well? Not being critical John, just curious. Jim Bryant (FL)
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