Dt From Book- Timbers Flashcards
What type of trees do hardwoods come from
Deciduous
What type of trees fo softwoods come from
Coniferous
What are the three ways trees can be cut
Through and through, quarter and baulk
What are the characteristics of baulk cut
Simple, not versatile, used in posts and beams
What are the characteristics of the quarter cut
Complex and expensive, creates waste, high quality, used in furniture
What are the characteristics of the through and through cut
Cost effective and quick, can warp and twist, general use
What are the two ways wood can be seasoned
Kiln and air
Give characteristics of air seasoning
Cost effective, takes a long time,
Give characteristics of kiln seasoning
Heat steam and pressure are used, faster but more expensive than air seasoning
What are the 3 types of manufactured boards
Plywood, MDF and chipboard
How is plywood made
Alternate veneers of wood glued together
How is MDF made
Wood chips are broken down into pulp, mixed itch glue and compressed
How is chipboard made
Small chips of wood are compressed and glued together
What type of woods are used for wooden toys
Hardwoods such as beech and oak - also easy to paint
What type of boards are used for flat pack furniture and why
Manufactured boards- cheaper, easy to assemble and dissemble for transportation.
What are mouldings
Specially shaped sections of wood- commonly used for frames or skirting boards.
what is the standard size for manufactured boards
2400 X 120mm sheets
What ate the 4 types of wood screw
Slotted, pozidriv, Phillips, Allen
What are the 3 types of hinges and what are they commonly made out of
Butt hinge, flush, concealed- brass, steel or plastic
What are the 3 knock-down fittings
Corner block fitting, cam lock, scan fitting
What are 3 of the surface treatments/ finishes
Paint, varnish, tantalising
What is varnish
Translucent and provides a hard, protective finish to wood
What is tanalising
Preservatives can be added to the wood- this protects from rot, decay and insects
What si the process of tanalising
Wood is placed in a tank where a vacuum is created
Thank is flooded with preservative treatment
Pressure is applied forcing the treatment deep into the wood
Excess preservative is drained and wood is left to dry.
