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3D design A level > 1.2 Woods > Flashcards

1.2 Woods Flashcards

1
Q

What are hardwoods

A

Slow growing deciduous

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2
Q

What are softwoods

A

Fast growing evergreen

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3
Q

What should work be done along with woods

A

the grain

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4
Q

What biopol supports woods cell walls

A

lignin resin

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5
Q

Why are trees felled in the winter

A

As they have less growth, less sap therefore less water

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6
Q

What (explain) the 2 types of wood conversion

A

plain sawn - cut into boards, quarter sawn - the log is cut into quarters then cut into boards

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7
Q

What is wood seasoning

A

Removing excess water(80-90%) to match the environment

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8
Q

What are the 4 adv of seasoning timber

A

decay immunity, greater strength, helps preservatives penetrate, less corrosive to metals

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9
Q

What are the 2 types of wood seasoning

A

air and kiln seasoning

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10
Q

What are the adv of air seasoning

A

cheap

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11
Q

What are the disadv of air seasoning

A

slow only meets outdoor conditions

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12
Q

What are the adv of kiln seasoning

A

quick and good for outdoor products

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13
Q

What are the disadv of kiln seasoning

A

expensive

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14
Q

What are the 7 wood types

A

Oak, beech, ash, mahogany, pine, teak, cedar

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15
Q

What is the most prevalent wood shrinkage direction

A

tangentially

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15
Q

What is shrinkage of wood

A

The expanding and contracting of wood causes warping and cracking, mainly during seasoning

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16
Q

What is a use of oak

A

exterior posts

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17
Q

What is a use of ash

A

tool handles and chair legs

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18
Q

What is a use of beech

A

wooden mallets

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19
Q

What is a use of teak

A

outdoor furniture

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20
Q

What is a use of mahogany

A

indoor furniture

21
Q

What are the properties of ash

A

flexible and tough

22
Q

What is a use of pine

A

interior timber framing

22
Q

What is a use of cedar

A

cladding

23
Q

What are the properties of oak

A

hard, tough, durable but heavy and hard to work

24
Q

What are the properties of teak

A

hard and tough

25
Q

What are the 3 ways to prevent wood hazards

A

ppe, low exposure, extraction and ventilation

26
Q

What are the properties of beech

A

hard

27
Q

What are the properties of mahogany

A

hard to work

27
Q

What are the properties of cedar

A

durable

28
Q

What are the properties of pine

A

strong and cost effective

29
Q

What are the 2 wood hazards

A

sap and dust

30
Q

What are the hazards of dust and sap

A

dust - respiratory irritation, sap - toxic and irritant

31
Q

What are the 3 wood stock forms

A

PAR, PSE, rough sawn

32
Q

What is rough sawn wood

A

wood that is directly from seasoning

33
Q

What is PAR wood

A

Wood that has all planned edges and sides

34
Q

How are skirting boards made

A

With wooden profiles(Moulding)

34
Q

What is PSE wood

A

Wood that only has 1 planned edge

35
Q

How should you join wood planks

A

At opposing grains

36
Q

What is the thickness of veneers

A

less than 3mm

37
Q

What are the adv of veneers

A

cheap, efficient use of rare species

38
Q

What are properties of plywood

A

strong, expensive, non attractive edges

39
Q

What are the 6 manufactured boards

A

Plywood, marine ply, aero ply, flexi ply, MDF, chipboard

40
Q

What is marine ply

A

regular ply with water-resistant glue

40
Q

What is plywood generally faced with

A

birch

40
Q

What is a use of marine ply

A

boats

41
Q

What is aero ply

A

thin sheets of ply around 1.5mm

42
Q

What is a use of aero ply

A

gliders

43
Q

What are the 5 adv of manufactured boards

A

large sheets, uniform performance, stable, flexible or rigid, doesn’t split

43
Q

What is flexiply

A

open grained on outer faces with minimal inner ply across grain

43
Q

What are properties of chipboard

A

low density, cheap, easily damaged

44
Q

What are properties of MDF

A

stable, uniform strength and appearance, needs sealing

3D design A level (30 decks)

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