KD: Kiln Dried.

kerf: The area of cut made by a saw blade. The area where there used to be wood before the saw blade cut it away. The width of a saw blade.

kerfing: Making a series of parallel crosscuts part way through one face of a length of wood so that the piece can be curved towards the kerfed face.

ketone: An organic compound that is strong, fast evaporating solvent used as part of paints to stabilize the other ingredients so that they don’t degrade as quickly over time acetone is a ketone.

kick out: The precipitation of a dissolved binder from a solution as a result of solvent incompatibility.

kickback: The action of a work piece being thrown back towards the operator by a moving blade or cutter. Can be prevented by featherboards and anti-kickback devices installed on equipment.

kiln: A chamber having controlled air flow, temperature and relative humidity, for drying lumber .

kiln conditioned: Similar moisture content in all “core” or center of boards in a kiln charge. Usually done by injecting steam into the kiln during the beginning of the drying process. Later , after the kiln process has removed the excess moisture in the boards, steam is a

kiln dried: Lumber dried in a kiln using artificial heat. Prepares lumber to proper moisture content for further manufacturing. Most KD hardwoods are dried to 6-8%.Kiln drying also kills bugs and larvae that infect green lumber.

kiln schedule: Same as drying schedule.

kink: A localized fairly sharp crook, as opposed to the normal more gradual curved crook, most often due to a knot and likely to happen in fairly narrow stock.

knife marks: marks left by planer knives during the dressing of a plank

knot: Portion of a branch or limb which has been surrounded by subsequent growth of the stem. The shape of the knot as it appears on the cut surface depends on the angle of the cut relative to the long axis of the knot. Small knot not over ½” in diameter. Pin k

knot sealer: A shellac-based sealer used to coat resinous knots that would otherwise stain subsequent finishes.

knothole: Void produced when an encased knot drops out of lumber.

knotty: Lumber that is selected to allow solid or sound knots on the face.