Woods Flashcards
(68 cards)
1
Q
wood stock forms
A
- rough sawn
- Planed square edge
- planed all round
- natural wood
- manufactured boards
- mouldings
2
Q
planed all round meaning
A
all edges are planed square, straight and level, it is ready to use
3
Q
planed square edge meaning
A
- only one edge that is planed the rest is rough sawn
4
Q
rough sawn meaning
A
direct from seasoning and has rough edges
5
Q
why is wood seasoned
A
- to help prevent defects such as twisting, warping and cracks
- increased strength and stability
- greater immunity from decay/rot
- helps preservatives penetrate
- makes wood less corrosive to metals
6
Q
what is the process for air seasoning
A
- wood is stacked in a shelter outside
- air is circulated between the planks to remove excess moisture
7
Q
is air seasoning expensive?
A
no
8
Q
where is air seasoned wood used?
how long does it take for air seasoning to happen?
A
in outdoor products
up to a year
9
Q
what is the process for kiln seasoning
A
- wood is stacked on trolleys
- kiln is initially filled with steam then it becomes hotter and drier
10
Q
how long does it take for kiln seasoning to happen?
A
a few weeks
11
Q
where is kiln seasoned wood used?
A
indoors
12
Q
what is a hardwood
A
a wood from a broad leaved (deciduous) tree
13
Q
what is a softwood
A
a wood from a cone bearing tree (coniferous)
14
Q
which direction is wood the strongest in
A
the direction of the grain
15
Q
what type of wood is oak
A
hardwood
16
Q
how many hardwoods are there
A
6
oak
teak
mahogany
birch
beech
ash
17
Q
oak characteristics
A
- hard
- tough
- attractive grain
- weather resistance
- corrodes ferrous metal
18
Q
oak uses
A
- furniture
- flooring
- boat building
- interior and exterior joinery
19
Q
what type of wood is Ash
A
hardwood
20
Q
ash characteristics
A
- tough
- attractive
- flexible
- open grain that makes it more flexible
21
Q
ash uses
A
- tool handles
- ladders
- sport goods
22
Q
what type of wood is mahogany
A
hardwood
23
Q
mahogany characteristics
A
- good ability to be oiled
- attractive red colour
- interlocking grain that makes fit harder to work
24
Q
mahogany uses
A
indoor furniture
cabinets
shop fittings
boats
veneers
25
what type of wood is teak
hardwood
26
teak characteristics
- hard
-tough
- straight grain
- natural oils resist moisture, acids and alkalis
27
teak uses
outdoor furniture
boat decks
lab benches
28
what type of wood is birch
hardwood
29
birch characteristics
hard
tough
straight close grained
resists warping
30
birch uses
veneers for plywood
furniture
indoor panelling
31
what type of wood is beech
hardwood
32
beech characteristics
hard
tough
close grained
available in steamed and unsteamed colours
doesn't impart taste to food
33
beech uses
chopping board
toys
tools
steam bent laminated furniture
34
what type of wood is pine
softwood
35
pinewood characteristics
straight grain
lightweight
attractive grain
can split
36
pinewood uses
construction work
roof beams
interior joinery
37
what type of wood is spruce
softwood
38
spruce characteristics
straight grain
high stiffness to weight ratio
resists splitting
39
what does a material with high stiffness to weight ratio mean
material is strong and resistant to bending or stretching, but it's also lightweight
40
spruce uses
guitar bodies
indoor furniture
construction
41
how many softwoods are there
5
larch
spruce
pinewood
Douglas fir
cedar
42
what type of wood is Douglas fir
- softwood
43
Douglas fir characteristics
straight/ slightly wavy grain
few knots
good resistance to corrosion
44
Douglas fir uses
construction
joinery
veneers
45
what type of wood is larch
softwood
46
larch characteristics
hard
tough
attractive grain
water resistant
47
larch uses
garden furniture
cladding
decking
fencing
48
what type of wood is cedar
softwood
49
cedar characteristics
straight grain
can corrode ferrous metals
low density
rot and insect resistant
50
cedar uses
sheds
greenhouses
beehives
interior panelling
51
what type of wood is plywood
manufactured board
52
plywood characteristics
- wood layers are placed onto each other at 90 degree angles
- strong due to the way the layers are glued onto each other
- no grain weakness
53
plywood uses
indoor furniture
desktops
floorboards
54
what type of wood is marine plywood
manufactured board
55
marine plywood characteristics
- similar to plywood but uses specialist glue to provide resistance to moisture
- some are resistant to fungal attack
56
marine plywood uses
boat panelling, lockers, dashboards
57
what type of wood is aeroply
manufactured boards
58
aeroply characteristics
plywood made from high quality timber like birch
lightweight
flexible
59
aeroply uses
laser cut projects
laminated furniture
jewellery items
plane bodies
60
what type of wood is flexible plywood
manufactured board
61
flexible plywood characteristics
odd number of layers of wood glued together then two outer layers are made from open grained timber to make it flexible
62
flexible plywood uses
laminated furniture
curved panels
63
what type of wood is chipboard
manufactured board
64
chipboard characteristics
woodchips that are compressed w a resin like UF
- good compression strength
- absorbs moisture
65
chipboard uses
veneered then used as
- kitchen worktops
- shelving
- flat pack furniture
66
what type of wood is MDF
manufactured board
67
MDF characteristics
compressed wood fibres
smooth
face finishes well
lightweight
very absorbent
68
MDF uses
flat pack furniture
kitchen units
toys
