Timbers Flashcards
Properties of coniferous/softwood tree?
Grow in cooler climates,
softer and easy to work with
cone-bearing trees, grow tall
loser grain structure
Often a building material
Grow faster than hardwoods
Properties of deciduous/hardwood trees?
Are usually quite hard
Grow in temperate climates
Seeds are enclosed in fruit
Slower growing trees (100 years)
Tighter grain
Very expensive
Mostly Found in Tropical or subtropical countries
Types of Coniferous trees?
Larch
Pine
Spruce
Redwood
Types of deciduous trees?
Ash
Beech
Mahogany
Oak
Balsa
Properties of manufactured boards?
Many thicknesses
Inexpensive
Covered with a thin layer of real wood called veneer
Made from waste wood
Large sheets of consistant quantity
Types of manufactured boards?
MDF (medium density fibre)
Plywood
Chipboard
What is conversion?
The process of cutting tree trunks into plants in a sawmill where they become timber
What is seasoning?
The process of drying the planks out either using a Kiln to heat it up or leave it out naturally
What are the two types of seasoning?
Air seasoning
Kiln seasoning
Physical Properties of Ash?
Pale coloured, narrow grain
Physical Properties of Beech?
Slight pink tint, close grain
Physical properties of mahogany?
Dark-reddish colour, very close grain
Physical properties of oak?
Moderate-brown colour with unique and attractive grain markings
Physical properties of Balsa?
Pale and wide-spaced grain due to it being a fast-growing hardwood
Physical properties of Larch?
Pale coloured with a contrasting darker grain, knotty
Physical properties of Pine?
Pale coloured with aesthetically pleasing grain
Physical properties of Spruce?
Pale cream with an even grain
Common uses of Ash?
Sports equipment, ladders
Common uses of Beech?
Furniture, children’s toys, workshop tool handles and bench tops
Common uses of Mahogany?
Good quality furniture, panelling and veneers
Common uses of oak?
Timber framed buildings, high quality furniture, flooring
Common uses of Balsa?
Model making, floats and rafts
Common uses of spruce?
Fencing, fence posts, cladding and decking
Common uses of pine?
Interior joinery and furniture, window frames
Common uses of spruce?
Bedroom furniture, stringed musical instruments
Physical properties of Medium-density fibreboard?
Smooth, light brown, can be veneered
Physical properties of Plywood?
Odd number of layers of veneer glued at 90 degree angles for strength, aesthetically pleasing outer layer
Physical properties of Chipboard?
Compacted wood chips, laminated with a variety of coverings, end cuts are difficult to finish
What is Medium-density fibreboard (MDF)?
Compressed board that is manufactured from fine fibres of wood combined with a synthetic adhesive. Compressed between two heated plates. Made from low-grade softwood and hardwood timber along with waste wood from other manufacturing processes
What is plywood?
Laminated board made up of several veneers of wood glued on top of each other. Each layer is at a 90 degree angle. The grain is running in the same direction
What is chipboard?
Manufacture board made up of several chips of timber glued together under pressure
Common uses of MDF?
Flat-pack furniture, decorative mouldings and shop interiors
Common uses of plywood?
Laminated flooring, roofing and furniture
Common uses of chipboard?
Kitchen work surfaces, kitchen cupboards and flooring
Working properties of Ash?
Flexible and good for steam bending,
tough
Working properties of beech
Tough
Durable
Smooth to finish
Working properties of mahogany?
Cuts and polishes easily
Gives a fine finish
Working properties of Oak?
Tough and durable
Polishes well
Working properties of Balsa?
Very soft and easy to form
Working properties of Larch?
Durable
Easy to machine
High sap content gives it good water resistance
Working properties of Pine?
Lightweight
Easy to form
Working properties of Spruce?
Easy to form
Takes stain colour well
Working properties of MDF?
Smooth and easy to finish
Absorbs moisture so not suitable for outdoor use
Working properties of Plywood?
Easy to cut and finish
Can be stained or painting
Working properties of Chipboard?
Strong but absorbent to water