LECTURE 4
Wood/ Limber Processing wood Softwood-evergreens-coniferous always stay green thin cell walls easier to glue, work light in color longer fiber Usage areas: construction. structural purpose, framing, paneling (cedar, fir, pine, hemlock..) Hardwood expensive heavy, stronger, darker in color except maple, birch, ashwood usage area: furniture, flooring, cabinetry manufacturing... The anatomy of tree Timber: Plank: Wood stick: Air seasoning: to dry wood Solid wood Expensive, hard to joint, not practical for furniture use. Timber Based board Different woods came together with pressing. Plywood Stronger than solid wood, show less moisture, can be used for built-up or box beams. Block Board Each strip has different direction grains that take any directional forces. In the middle soft wood.