SOFTWOOD Coniferous (doesn’t loose it’s leaves in winter) trees provide softwood. They have needle like leaves and keep them throughout the year. They grow quick and the wood is relatively cheap. PINE, CEDAR and SPRUCE are softwood trees.

HARDWOOD Deciduous trees loose their leaves in winter and provide hardwood. The difference between a softwood and a hard wood is biological and not to do with the hardness or softness of the wood. BALSA wood is a hardwood which is very soft. Hardwood grows slow and the wood is relatively expensive. OAK, BEECH, ASH, MAHOGANY and TEAK are hardwoods.

1. Using the computers find the file: Z:\DT\1 KS4\GCSE 2017-18\natural timber research.ppt a) Use this file to fill in the chart about natural timbers and manmade boards b) Print and paste into your book Natural timbers Description/image Advantages Disadvantages Common uses Oak Mahogany Beech Balsa Pine Cedar Jelutong Birch Ash Larch

Description/image Advantages Disadvantages Common uses Plywood MDF 1. Using the computers find the file: Z:\DT\1 KS4\GCSE 2017-18\natural timber research.ppt a) Use this file to fill in the chart about natural timbers and manmade boards b) Print and paste into your book Manufactured boards Description/image Advantages Disadvantages Common uses Plywood MDF Chipboard IKEA megafactories about 3.20 in for making MDF

WOOD PROPERTIES Oak Beech Pine Wood Advantages Disadvantages Applications Oak Strong, hard, tough Works well Durable Expensive Heavy Prone to splitting Physically hard Garden furniture Construction Quality furniture Beech Physically hard Tough Polishes well Prone to warping Not suitable for outdoor use Can be difficult to work Workshop benches School desks furniture Pine Straight grain Easy to work Knots can make work difficult Construction Roof joists Floorboards Furniture

HANDLING COLLECTION Using your notes on different natural timbers and man made timbers identify as many of the 13 timbers you can. Use the supplied list to help you

Pine Oak Beech Maple Mahogany MDF Plywood Chipboard/ laminated ANSWERS Pine Oak Beech Maple Mahogany MDF Plywood Chipboard/ laminated Jelutong Ash Hardboard Blockboard

Pine Oak Beech Plywood Chipboard/ laminated Maple Mahogany MDF Jelutong Ash Hardboard Blockboard

SOFTWOOD PINE is a pale creamy brown colour. It is easy to work and relatively cheap but may contain knots which are weak points. USES building frames, construction and furniture. Needs protection for outdoors. CEDAR is a dark reddish brown colour. It is light weight but not strong, expensive but durable with a high oil content. USES cladding on outdoor buildings.

SOFTWOOD PINE is a pale creamy brown colour. It is easy to work and relatively cheap but may contain knots which are weak points. USES building frames, construction and furniture. Needs protection for outdoors. CEDAR is a dark reddish brown colour. It is light weight but not strong, expensive but durable with a high oil content. USES cladding on outdoor buildings.

HARDWOOD MAHOGANY BEECH TEAK ASH OAK Light brown Deep red/brown Indoor/ outdoor Expensive Hard to work Tough/durable Furniture Deep red/brown Indoor/ outdoor Very expensive Durable but difficult grain. Furniture and veneers OAK MAHOGANY Pinkish. Indoor use Close grain Hardwearing Finishes well Furniture, toys, kitchen utensils Golden brown Indoor/ outdoor Strong and durable. Garden furniture, boats, science lab worktops. BEECH TEAK Pale cream Indoor use. Tough / flexible Tool handles, sports equipment ASH

MANUFACTURED BOARDS Advantages Disadvantages Available in large sheet size Are not weather proof and will disintegrate outside unless modified/treated/finished so that they can be used outside Cheaper to buy than natural timbers Some are not as Aesthetical pleasing

MANUFACTURED BOARDS MDF https://www.youtube.com/watch?v=qitenYvpSx4 MDF Medium density fibreboard is made from fine wood particles compressed and glued together. When used it is sometimes covered with a plastic laminate coating or a hardwood veneer. It holds paint well and can be painted to a smooth finish. ADVANTAGES / DISADVANTAGES

MANUFACTURED BOARDS CHIPBOARD Made by compressing and gluing small chips of waste wood into sheets. When used it is normally covered by a plastic laminate coating (work tops) or a hardwood veneer. ADVANTAGES / DISADVANTAGES

MANUFACTURED BOARDS PLYWOOD Made from thin sheets of wood (veneers) glued together with the grain at 90 degrees to the one next to it. They have an odd number of layers 3,5,7 etc so that the grain on the top and bottom face the same direction. ADVANTAGES / DISADVANTAGES

HOMEWORK Research the manufactured woods Plywood, MDF and chipboard looking at their possible finishes for indoor and outdoor use. Present your work on an A3 power point slide using a text size of 12pt- it will be used for your GCSE