timber

Question 1

how is timber converted

Answer 1

rough sawn or planed all round

Question 2

how to season timber

Answer 2

air or kiln drying

Question 3

faults that can occur in timber

Answer 3

bowing, splitting, cracking, cupping, twisting or shakes

Question 4

how to laminate boards

Answer 4

using heat pressure and adhesives to layer veneers

Question 5

adv and disadv of butt joint

Answer 5

easy, simple to construct
lacks strength, easy to break

Question 6

adv and disadv of dowel joint

Answer 6

more strength than butt
accuracy needed when drilling holes

Question 7

adv and disadv of mitre joint

Answer 7

grain and pattern continuous
difficult to construct, lacks strength

Question 8

adv and disadv of housing joints

Answer 8

provides strength to joint
needs to be cut with accuracy

Question 9

adv and disadv of lap/half-lap joint

Answer 9

provides flush joint
low strength, accuracy

Question 10

adv and disadv of bridle joint

Answer 10

very strong
needs to be accurate

Question 11

adv and disadv of mortice and tenon joint

Answer 11

high strength, high quality finish
needs to be accurate

Question 12

adv and disadv of dovetail joint

Answer 12

high quality, strong, attractive
very difficult to be accurate

Question 13

adv and disadv of comb joint

Answer 13

strong, can be decorative
requires accuracy with marking gauge

Question 14

characteristics of cedar

Answer 14

• reddish brown, straight grain
• resistant to water, SW
• used for fences, sheds, boats
  + natural insect repellent
• expensive, discolours

Question 15

characteristics of balsa

Answer 15

• off white tan colour
• lightweight, HW
• used for model making
  + buoyant, versatile
• poor durability

Question 16

characteristics of oak

Answer 16

• light beige, attractive grain
• strong, durable HW
• used for high end furniture, decking
  + good water resistance
• hard to work

Question 17

characteristics of teak

Answer 17

• light-dark brown colour
• tough, high resistance, HW
• used for outdoor furniture
  + excellent resistance to damp enviro
• expensive, blunt cutting tools

Question 17

characteristics of pine

Answer 17

• pale yellow colour
• lightweight, SW
• used for floorboards, toys
  + nice colour, grows fast
• easily damaged

Question 18

characteristics of ash

Answer 18

• creamy white colour
• tough, flexible HW
• used for ladders, tool handles
  + flexible
• prone to rotting

Question 19

characteristics of beech

Answer 19

• light brown with flecks
• closed grained, tough, HW
• used for interior furniture
  + durable, cheap
• not suitable for outdoors

Question 20

characteristics of mahogany

Answer 20

• reddish brown colour
• durable HW
• used for window frames, veneers
  + finishes well, easy to work
• discolours in sunlight