2Manufactures boardsManufactured boards are now extensively used in industry and in the home. These relatively new materials are known as composites. Generally, these materials are manufactured using natural timber in thin sheets or particles, which are bonded with a resin, compressed and heated.These products are environmentally friendly because they are often produced from waste products such as sawdust, bark and off-cuts.
3Advantages & Disadvantages cheapstable (in warm, centrally-heated environments)thin veneers of expensive timbers can be used as top, decorative layersboards are available in large sheets (1220 x 2240 and 1550 x 1550)Disadvantagesedges require ‘facings’repair and maintenance can be difficult
6Plywood Plywood is made from layers or plies of wood glued together. The grain of each ply is laid at right angles to the next.This makes the ply strong in both directionsPlywood is ideal for lightweight box construction, cabinet backs and drawer bottoms
7BlockboardThese boards are made by sandwiching strips of softwood between two plies.The outer faces of veneer have the grain running at right angles to the strips.Ideal for furniture and worktops
8HardboardHardboard is made by mixing wood fibres together with water and resin glue and hot pressing into sheets.Hardboard is not very strong and is usually supported on timber framesIdeal for low-cost furniture parts e.g. drawer bottoms
9MDFMDF is manufactured in a similar way to hardboard but is compressed under greater pressure and is therefore much stronger.MDF is cheap, strong and is easily shaped and finished.Ideal for all types of furniture making and interior joinery
10ChipboardChipboard is made by gluing chips of wood together under heat and pressure.Standard sheet size is 1220mm x 2440mm. Common thickness is 18mm.Veneers and plastic laminate faced chipboard is widely used for worktops, shelves and furniture making
11Questions Why are manufactured boards environmentally friendly? State two advantages of man-made boardsState two disadvantages of man-made boardsName four manufactured boards and their propertiesState one usage for six different man-made boards