Arizona Hardwood Medullary Ray

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Arizona hardwood medullary ray.

Oak has medullary ray cells which radiate from the center of the log like the curved spokes of a wheel. With respect to red spruce medullar features can be quite prominent but apparently this is less often the case as compared to sitka. The degree to which this ray fleck is revealed is a function of the angle of the growth rings to the face of the boards. If you look at a tree stump or a cut end of a tree you ll see medullary rays or pith rays as light colored ribbons seeming to radiate out from the center of the tree.

Rift only rift sawn at least 75 of the piece must contain rift characteristics. Graf custom hardwood portsmouth. Where does sitka and red spruce land with regards to prominent display of the medullary ray pattern. Most commonly wood is brokered as mixed with rift and quarter sawn boards referred to as r q.

The ray fleck flake or figure of a quarter sawn board is the medullary ray of the log which emanates outward from the center of the log like spokes of a wheel. Used on oak species this method avoids the prominent flake figure of medullary rays that quarter slicing causes. Post sep 22 2017 2 2017 09 22t16 21. Grain lines to be mostly parallel to the length of strips and medullary ray flecks present and more than 1 16 wide.

Lumber is piled in alternating layers separated by narrow sticks to permit air. Not a complete drying process. Rift and quarter sawn wood is stable and will only shrink in thickness. 4 4 1 and so on up to 16 4 4.

4 4 1 inch it is a practice among lumbermen to express the thickness of cabinet grade lumber in quarters of an inch. The ray fleck flake or figure of a quarter sawn board is the medullary ray of the log which emanates outward from the center of the log like spokes of a wheel. Air drying ad wood that has been dried naturally to have moisture content of about 18. The degree to which this ray fleck is revealed is a function of the angle of the growth rings to the face of the boards.

Rift sawn wood exhibits less medullary ray or ray fleck while it maintains the same straight grain as the quarter sawn wood. This straight grain cut is at a slight angle to the medullary rays in oak to minimize ray fleck flake. In cross section the angle of the annual ring tangent to the face of the piece to be between 30 and 60. 3 566 likes 168 talking about this 42 were here.

A term used when talking about quartersawn hardwoods is medullary ray in simple terms the medullary rays are vascular cells that transmit moisture and nutrients outward as the tree grows.