This isn't a direct answer, as I'm not familiar with a specific post here on KKF (not saying there isn't one), but if you go to the Boardsmith website, his FAQ has a pretty good discussion on various woods and hardnesses. You can find the link in his thread below.
The best way to search KKF is to use google. If you do it this way - search word(s) site:kitchenknifeforums.com, it will force google to only search KKF.
The best way to search KKF is to use google. If you do it this way - search word(s) site:kitchenknifeforums.com, it will force google to only search KKF.