Wood Flashcards
Name 3 points about man made boards…
And 2 possible uses
Dimensionally accurate; constant thickness and stable
Can come in large sizes
Aren’t necessarily cheaper than solid wood
Furniture and work surfaces
How is MDF made?
Name 3 positives and 2 negatives of MDF…
Dust + Formaldehyde glue; crushed down 30 times
+ Very dense and constant, cheaper than solid wood, made from waste products (wood dust)
- Needs a veneer (ugly) and you need special extractors to cut it; produces a carcinogenic dust.
How is Chipboard made?
Name 3 positives and a negative
Wood chips + formaldehyde glue
+ Very dense and constant, cheaper than solid wood, uses waste products (wood chips)
- Always needs a veneer/laminate
How is Plywood made?
Name 3 positives and a negative…
Veneer (single layer of ply) are layered so they alternate grains and glued wiht formaldehyde glue
+ Very strong, flexible; can bend and rotate
- More expensive than normal wood
What man made wood could you use to make a model?
MDF
Why might oak be used to make coffee table?
It is aesthetically pleasing and a tough material that can withstand items such as TV remote controls being dropped onto it.
Why is plywood used to make furniture…
Plywood is available in long wide sheets unlike solid timber, which removes the need to join pieces together.
Plywood can be steamed to make it pliable enough to laminate into the curved shape.
Plywood can have veneers applied to the surface to make it look like a more expensive timber.
Plywood is stable and has no grain issues like a solid timber so once laminated will not warp or change shape.
Why is teak used to make outside furniture?
Any disadvantages of using teak?
Teak has a very high oil content so can be left outside without treatment; it only needs oiling every 50+ years.
It has a natural resistance to weathering and
external environmental conditions.
Its is aesthetically pleasing
However teak comes from abroad so has lots of air miles
Name 4 hard woods..
Beech (♛)
Oak
Mahogany
Teak
Beech;
Properties?
Positives / Negatives?
Short grain, non abrasive, durable, hard (to dent), almost knot free
+ Short grain = small splinters, doesn’t wear out tools; non abrasive, FSC
- 60 years to grow, could be described as aesthetically boring
Oak;
Properties?
Positives / Negatives?
Long grain, low oil content; abrasive, durable, hard
+ Aesthetics are good, FSC, can be used green
- Long grain = long splinters (can’t be used in cooking equipment / sports hall floors) wears out tools; very abrasive
Mahogany;
Properties?
Positives / Negatives?
Durable; withstand chemicals, hard to set fire to, stain resistant
+ Good aesthetics
- Big air miles (tropical wood) and deforestation (not FSC)
What wood might be used for a rolling pin and why?
Beech; it has a short grain so won’t leave big harmful splinters into any products. It is also very durable so can withstand being hit about.
What products is Oak used for and why?
Furniture; aesthetic qualities and is durable and hard; wear and tear
What wood might be used for laboratory worktops and bar tops?
Mahogany; durable. It also has good aesthetics; bar top.
However it is expensive
