timber Flashcards
how is timber converted
rough sawn or planed all round
how to season timber
air or kiln drying
faults that can occur in timber
bowing, splitting, cracking, cupping, twisting or shakes
how to laminate boards
using heat pressure and adhesives to layer veneers
adv and disadv of butt joint
easy, simple to construct
lacks strength, easy to break
adv and disadv of dowel joint
more strength than butt
accuracy needed when drilling holes
adv and disadv of mitre joint
grain and pattern continuous
difficult to construct, lacks strength
adv and disadv of housing joints
provides strength to joint
needs to be cut with accuracy
adv and disadv of lap/half-lap joint
provides flush joint
low strength, accuracy
adv and disadv of bridle joint
very strong
needs to be accurate
adv and disadv of mortice and tenon joint
high strength, high quality finish
needs to be accurate
adv and disadv of dovetail joint
high quality, strong, attractive
very difficult to be accurate
adv and disadv of comb joint
strong, can be decorative
requires accuracy with marking gauge
characteristics of cedar
- reddish brown, straight grain
- resistant to water, SW
- used for fences, sheds, boats
+ natural insect repellent - expensive, discolours
characteristics of balsa
- off white tan colour
- lightweight, HW
- used for model making
+ buoyant, versatile - poor durability
characteristics of oak
- light beige, attractive grain
- strong, durable HW
- used for high end furniture, decking
+ good water resistance - hard to work
characteristics of teak
- light-dark brown colour
- tough, high resistance, HW
- used for outdoor furniture
+ excellent resistance to damp enviro - expensive, blunt cutting tools
characteristics of pine
- pale yellow colour
- lightweight, SW
- used for floorboards, toys
+ nice colour, grows fast - easily damaged
characteristics of ash
- creamy white colour
- tough, flexible HW
- used for ladders, tool handles
+ flexible - prone to rotting
characteristics of beech
- light brown with flecks
- closed grained, tough, HW
- used for interior furniture
+ durable, cheap - not suitable for outdoors
characteristics of mahogany
- reddish brown colour
- durable HW
- used for window frames, veneers
+ finishes well, easy to work - discolours in sunlight
