Douglas Fir (Vertical Grain)

The sapwood can be whitish to pale yellow or reddish-white, and varies in thickness. The heartwood is variable in colour, with a very marked contrast between earlywood and latewood. The summerwood Is harder and red-brown, whereas the springwood is softer and a paler pinkish-yellow. The grain is normally straight, and can be even or uneven; sometimes it is wavy or curly. Wood with narrow rings has a more uniform texture than that with wider rings, which are often uneven.Typical dry weight: 33lb/ft3 (530kg/m3)Specific gravity: .53

Properties:

It has high crushing and stiffness strength, high bending strength and medium resistance to shock loads. Wood from the Pacific coast is tougher, harder and stronger than that from other areas. It works very well with hand and machine tools, but does have a blunting effect on cutters. it planes, nails, screws, turns and glues very well. It has poor painting and varnishing qualities, but stains satisfactorily.

Seasoning:

Due to the low moisture content of the heartwood, the wood dries quickly and readily. There can be problems with staining from extractives, and occasionally with honeycombing and ring failure.

Durability:

Douglas fir has little resistance to decay, and is vulnerable to attack from longhorn and jewel beetles. The heartwood is resistant to preservative treatment, and the sapwood has adequate absorption

Typical Uses:

It produces more plywood than any other timber, and vast quantities of veneer. It is also used for structural beams, building, domestic and factory flooring, formwork, packing cases, marine piling, interior and exterior joinery, cabins, vats and railway sleepers (railroad ties).

Pseudotsuga menziesii (Pinaceae)

Also called:

Oregon pine (USA), British Columbian pine, Columbian pine, blue Douglas fir. Also distinguished by origin: Colorado, Oregon, Rocky Mountain Douglas fir

Grows:

Canada and USA; also introduced in UK, Ireland, New Zealand, Australia, France and Belgium

Weight per Board Foot:

2.7 lbs

Typical Height:

80-200ft (24-60m), but can reach 300ft (90m) in North America

Trunk Diameter:

2-5ft (0.6-1.5m)**Vertical Grain 4'x8' 10mm Paper Back Veneer
10 bf min