Wood

Question 1

Kinds of hardwoods (6)

Answer 1

oak, ash, mahogany, teak, birch, beech

Question 2

properties of oak

Answer 2

hard, tough, good weather resistance, tannic acid-will corrode steel screws/fixings

Question 3

properties of ash

Answer 3

tough, flexible

Question 4

properties of mahogany

Answer 4

rich red dark colour, easy to work with

Question 5

properties of teak

Answer 5

hard, tough, natural oils resist moisture and acids and alkalis

Question 6

properties of birch

Answer 6

hard, resists warping

Question 7

properties of beech

Answer 7

tough, hard, does not make food taste like wood

Question 8

types of softwood (5)

Answer 8

pine, spruce, douglas fir, larch, cedar

Question 9

properties of pine

Answer 9

knotty

Question 10

properties of spruce

Answer 10

resistant to splitting

Question 11

properties of douglas fir

Answer 11

few knots, stable, good corrosion resistance

Question 12

properties of larch

Answer 12

hard, tough, good moisture resistance

Question 13

properties of cedar

Answer 13

can corrode ferrous metals, low density, good sound damping, good moisture resistance

Question 14

Kinds of Manufactured board (7)

Answer 14

MDF, blockboard, OSB sterling board, chipboard, hardboard, cross laminated timber, plywood

Question 15

Pros of manufactured board (6)

Answer 15

-consistent thickness
-large panels
-easy to work with
-readily available
-takes fixtures and fittings well
-extra strength can be achieved because wood at 90 degrees
-also can add veneers

Question 16

2 types of manufactured board

Answer 16

particle and sheet

Question 17

Which manufactured boards are sheet

Answer 17

ummm Plywood and uhhh blockboard and errrr cross laminated timber

Question 18

Properties of Plywood

Answer 18

-each layer at 90 degrees
-very STABLE against warping
-size not restricted by tree
-can be bent
-shrinkage almost ELIMANATED

Question 19

Properties of Blockboard

Answer 19

-strips placed edge to edge and placed between veneer of hardwood
-more durable than plywood but not as strong

Question 20

Properties of MDF

Answer 20

-uniform thickness
-easy to work with
-need respiratory protection & dust extraction
-can have veneers
-not good with water

Question 21

Properties of Chipboard

Answer 21

-wood particles glued together with adhesive (resin) and heat and pressure used
-unattractive edge

Question 22

Properties of Hardboard

Answer 22

-also called high density fibreboard
-has a smooth surface
-dense

Question 23

properties of OSB/ Sterlingboard

Answer 23

-mainly used for construction
-can be RESISTANT to FIRE

Question 24

Properties of cross laminated timber

Answer 24

-sustainable
-can be very big
-restricted by machinery size
-more expensive
-FIRE RESISTANT
-cleaner and drier construction site (not exactly sure why though)

Question 25

Definition of a veneer

Answer 25

Thin slices of wood which are glued onto the surface of a material for an enhanced and more decorative look

Question 26

Why are hardwoods generally used more as veneers

Answer 26

They are more DURABLE and DECORATIVE

Question 27

2 of the types of veneer

Answer 27

paperback and laminates

Question 28

What is formica and how is it made

Answer 28

-lots of paper stuck together -decorative surface on top layer -heat cured with resin -so strong CROSS LINKS are formed

Question 29

What are knots

Answer 29

natural defects found in timber- the point where branches were grown from

Question 30

Definition of timber conversion

Answer 30

Sawing up logs to produce useable wood forms

Question 31

Process of timber conversion (5)

Answer 31

1- Mature trees felled (and replaced with saplings in managed forests) 2- Trees stored or transported 3- Trees enter saw mill 4- Planks trimmed wither side to remove bark 5- Wood left to SEASON (so it is less likely to warp or distort)

Question 32

What is a stock form

Answer 32

The way in which a material (?) can be supplied

Question 33

Wood stock form examples

Answer 33

dowel, rough sawn, sheet, moulding, planned square edge

Question 34

What is plain sawn wood

Answer 34

Log just sliced along

Question 35

What is rift sawn wood

Answer 35

all wood cut at 90 degrees to the grain

Question 36

What is quarter sawn wood

Answer 36

wood cut into quarters then cut into planks in each quarter

Question 37

Properties of plain sawn wood

Answer 37

-most common -most inexpensive -most recognisable -least stable

Question 38

Properties of rift sawn wood

Answer 38

-clean straight grain -no ray fleck -least efficient -most expensive -most STABLE

Question 39

Properties of Quarter sawn wood

Answer 39

-ray fleck (visual texture, provides EMPHASIS) -in the middle stable -in the middle expensive -desirable aesthetic

Question 40

What is ray fleck

Answer 40

where the sap moves up the tree

Question 41

What in wood can be a hazard

Answer 41

toxicity of dust from wood and sap

Question 42

What are the 2 main forms of seasoning

Answer 42

air and kiln

Question 43

what does seasoning do

Answer 43

removes excess moisture