Natural woods and man-made board

fampulli
Mind Map by fampulli, updated more than 1 year ago
fampulli
Created by fampulli over 5 years ago
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GCSE CDT (Materials) Mind Map on Natural woods and man-made board, created by fampulli on 06/01/2014.

Resource summary

Natural woods and man-made board
1 timber
1.1 made from trees
2 two types
2.1 hardwood
2.1.1 decisuous trees- lose leaves each autum
2.1.2 beech
2.1.2.1 chairs and toys
2.1.2.1.1 tough, hard and wear resistant
2.1.3 mahogany
2.1.3.1 veneers and indoor furntiture
2.1.3.1.1 high- quality, polishes well, but has interlocking grain, making it difficult to work
2.2 softwood
2.2.1 coniferous trees- evergreen
2.2.1.1 grow faster- usually cheaper
2.2.2 redwood
2.2.2.1 Scots pine
2.2.2.2 construction work
2.2.2.2.1 easy to work, durable, relatively cheap
2.2.3 Western Red Cedar
2.2.3.1 silky smooth finish
2.2.3.2 outdoor woodwork- contains natural oils protecting it from the weather
3 conversion
3.1 Cutting wood from tree trunks
3.1.1 then: seasoning
3.1.1.1 planks are dried- to prevent it warping or twisting
3.1.1.1.1 machined
3.1.1.1.1.1 into shape
4 Manufactured board
4.1 made from wood fibre or layers
4.2 no limit on size, they're not cut from trees so can be made into large sheets
4.3 cost less
4.4 more environmentally friendly
4.4.1 use waste from the processing of wood
4.5 properties are not affected by grain of the wood
4.6 MDF
4.6.1 Medium Density Fibreboard
4.6.2 made by squeezing and gluing tiny wood particles together
4.6.3 no grain- smooth surface
4.6.4 DIY indoor furniture
4.7 Hardboard
4.7.1 slightly larger particles
4.7.2 one side smooth, other rough
4.7.3 lower strength than other manufactured boards
4.7.4 places where it cant be seen- backs of drawers
4.8 Plywood
4.8.1 thin strips of wood, glued together
4.8.1.1 veneers
4.8.1.1.1 each strip is glued with the grain running at a right angle to the previous one
4.8.1.1.1.1 appearance can be improved by covering it in high- quality hardwood venneers
4.9 Blockboard
4.9.1 strips of softwood sandwiched between 'plies'
4.9.1.1 the grain of the plies runs at right angles to the softwood strips
4.10 Chipboard
4.10.1 small chips of wood squeezed and glued together
4.10.2 appearance improved by hardwood veneers or a thin layer of plastic
4.10.3 cheap with rough surface
4.10.4 kitchen worktops
5 renewable materials
5.1 if managed sustainably, it will never run out
6 reclaimed wood
6.1 good quality wood can be re-used
7 wood can also be recycled
7.1 e.g. for making manufacture boards
8 or just burned as fuel, to produce energy
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