Key Points Flashcards
What is paper classed as
anything less than 200gsm
What is gsm
grams per square meter
What is board classed as
over 200gsm
What can adding materials do to paper
make it stronger, waterproof or insulator of heat
What are hardwoods
woods from deciduous trees
What are softwoods
woods from coniferous trees
What is the difference between hardwoods and softwoods regarding maturation
hardwoods can take ten times longer to mature
What comes in larger sizes natural timbers or manufactured boards
manufactured boards
What is the benefit to manufactured boards vs natural timbers
more stable and won’t split or twist
What can be added to manufactured boards to improve appearance
veneers and laminates
What are ferrous metals and what is a common property
metals containing iron and usually magnetic
What are non-ferrous metals
metals w/o ironW
What are alloys
combinations of two or more metals with other elements
What can thermoforming polymers do
repeatedly heated, formed and cooled
What can thermosetting polymers do
only be formed with heat once
What is an example of thermosetting polymer
eurea formaldahyde
What can thermosetting polymers NOT be
recycled
Where can natural fibres come from
plant or animal sources
What are synthetic fibres manufactured from
oil-based chemicals
What are examples of synthetic fibres
polyester
polyamide
elastane
What are plain weave fabrics like
strong and hardwearing
What are non-woven fabrics made from
directly from fibres without woven or knitted
What are knitted fabrics made from
yarns looped together to make looser flexible fabrics
