So, Thorkil, I need a new axe. Very good information, and well worth considering. It leads to the Smith, and the learning of manufacture. I like, and will file the information for future use. They have an 800 number, call Dir assistance as I do not have the number on hand.
All oaks have natural open spaces in the wood.
In white oak, these voids are filled with the glue that holds the wood fibers together to form the tree. Thus, it is exceptionally strong. Red oak is the variety most commonly found in this country. In the middle ages, black oak was generally used. However, the differences between black oak and red oak are so slight that lumber yards make no distinction.