Flashcards
woods
Flashcards do conjunto (12)
- 1WoodsNatural and Manufactured Timbers
- 2Primary SourcesTrees for all timbers
Hardwoods and Softwoods - 3HardwoodsCome from Deciduous trees.
Trees that lose there leaves in winter.
Troad leaves.
Slow growing.
More expensive than softwoods
Good resistance to decay - 4—Hardwoods and their properties
- 5SoftwoodsConiferous trees (Evergreens)
Cone bearing trees.
needles rather then leaves.
Quick growing.
Less dense than hardwoods - 6—Softwoods and their properties
- 7Manufactured boardsWere developed as an alternative to natural timbers
Any shape
Uniformed strength - 8Advantages of manufacture boardsReadily Available
Wide sheets
Range of thicknesses
Consistent properties
Less likely to twist, warp, split - 9—Manufactured boards
- 10Medium Density Fibreboard (MDF)A compressed board
Fine fibres of wood and synthetic adhesive
two heat presses compress it - 11PlywoodA Laminated board made up of several veneers of wood glued on top of each other.
each layer 90˚ to one another
an odd number of sheets
Consistent strength - 12Chipboard"particle board"
Made up of flakes or chips of timber glued together under pressure
not that strong or durable
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- GCSE Design and Technology FlashCards sobre woods, criado por jack lyall em 04-06-2020.
- Criado por
- jack lyall
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