Archive for wood

Wood for furniture (3 ‘man-made’ woods)

// November 9th, 2009 // No Comments » // wood

‘Man-Made’ Woods , There are a number of reason why it is necessary to manufacture ‘man-made’ woods, and among these is the fact  that natural wood is becoming more and more scarce and increasingly expensive. Another factor is that large, natural-wood boards tend to warp, whereas ‘man-made’ boards are much more stable. Built-in kitchen and bedroom units, in particular, would be very difficult and prohibitively expensive to produce in natural wood.

Medium-density fibreboard (MFD) : this board is manufactured by reducing wood to very fine fibre, mixing it with rein and then compressing it under pressure to form sheets. Standard sizes and thicknesses vary from country to country, with 12 mm or the closest available thickness being the most suitable for general furniture-making. Your local hardware store or woodyard should be able to supply sheets of almost any size you require. This wood has a very smooth finish, which can be hand or spray-painted, and is also very versatile as it can be routed and shaped relatively easily. In blocks thick enough, it also turns remarkably well.

Plywood : in woodworking, there is often a need for relatively thin boards that have a high strength-to-weight ratio, for example panels in doors or cabinets, and drawer bottoms. This is where plywood comes into its own. It is made by  laminating thin sheets of wood so that the grain of each sheet is at right angles to the one adjacent to it. Plywood is usually produced in sheets of 2.44 m by 1.22 m and it a variety of thicknesses, ranging  from a very thin tree-ply (about 3 mm) to multi-ply (about 25 mm). Although the surface is not as smooth as MDF, plywood has a natural-wood appearance and is far stronger than MDF.

Blockboard (copine, pre-glued panels) : while long, wide boards of natural wood can be unstable, there is still a demand for them. To meet this demand teh timber industry has come up with the solution of  gluing together strips of pine or oak, which are about 35 mm wide and 6-22 mm thick, to form boards up to 700 mm wide. Blockboard, while being very strong and stable, retains the appearance of natural wood. Boards are manufactured in a variety of widths and lengths, up to about 700 mm wide by up to 4 m long and usually in a standard thickness of 22 mm.

Chipboard : Similar in some way to MDF, chipboard is made by mixing wood chips with resin and then compressing it under pressure to form sheets of similar size and thickness to MDF.

manwood

Wood for furniture (2 hardwoods)

// November 9th, 2009 // No Comments » // wood

Hardwoods : in this category are harvested from trees that take a very long time to grow to maturity, in many cases as many as 200-300 years. Traditionally, the more popular hardwoods for woodworking include oak, beech, walnut and mahogany. Generally speaking, the hard woods have a much more beautiful character, pattern and grain formation, and are far more hardy than the softwoods. They are, therefore, a more popular choice for furniture making than softwoods.

American red oak: this wood is heavy, durable and very strong. It has similiar qualities to American white oak, but tends to be redder in colour and has a more interesting grain.

American white oak: Although similiar in appearance to other oak varieties, American white oak has a yellowish-red colour and a less attractive grain. What it loses in attractiveness, however, it gains in a reputation for toughness and durability.

Australian red cedar: Unlike other cedar varieties, this timber is a hardwood. It is slightly redder in colour than other cedars and has a grain very similiar in appearance to Oregon  pine when finished. It is most commonly used for small cabinets and other furniture.

Beech : this is another  popular furniture-making wood as it is light, strong and hard. The whiter the wood, the younger it is and the more popular for furniture making. Avoid using the darker or discoloured wood as this comes from much older trees and has the tendency to split quite easily. Beech has an excellent texture, making for easy planing, joining and finishing. It takes the bumps and scrapes of normal household use very well, and because of its smooth finish it is also a favourite  choice for use in tool handles.

Elm : this attractive timber is often used for making large pieces of furniture. It is light red-brown in colour and some species, such as European elm, hace a beautiful figure and burl pattern.

Iroko : is generally golden-brown in colour, and has a pungent and irritating aroma when worked in machines. Similiar to teak in appearance and durability, but not as oily, iroko is a good choice for outdoor furniture.

Jelutong : This light-yellow timber is often used as substiture four South African yellowwood as its appearance and characteristics are very similiar, but it is a great deal less expensive. Although strong and durable, boards need to be selected carefully because they have a tendency to contain oval holes, as well as circular worm holes.

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Mahogany : this is very beautiful timber with a red-brown colour and a distinctive grain. Most varieties are quite heavy in comparison to other woods, and they are strong and durable. Although it is a popular choice for furniture-making, and has been for many years.

Maple : there are many varieties of maple, but generally it has a very light-brown colour with an attractive grain that finishes well. It is a tough wood and versatile for all aspects of woodworking. One particularly pretty variety is bird’s-eyes maple, which has regular dark-brown marking that look like its name suggests. Bird’s-eye maple is often used for small-scale woodworking projects such as presentation boxes, and veneers.

Meranti : is very similar in many ways to mahogany, It is a plain but attractive straight-grained hardwood with a reddish colour. Because of its straight and event grain, meranti is most often used in the construction of door dan window frames and for skirting boards. when working this wood keep a pair of tweezers in your workshop as more splinters end up in fingers and hands from meranti than any other kind of timber.

Oak: this very beautiful hardwood is grown in many parts of the world and the type of oak you use will depend upon where you live. Oak is a popular choice for lounge and dining room furniture and tends to darken with age. It is an amazing strong wood which, in days gone by, was used in the construction of ships. Is was sawn into massive beams for the construction of houses .

Rosewood : there are many varieties of rosewood available. This species takes it name from the aroma of the wood-the underground section of  canary rosewood is, in fact, used in the preparation of perfume. Rosewood has a dark-red to red-brown colour and finishes beautifully. It is used for showpieces of furniture, pianos, veneers and turned bowls.

Sapele (sapele mahogany) : this very grainy and coarse-textured wood is mainly used as a veneer on manufactured boards, and is popularly, used in this form from making pianos and other furniture. It is red-brown in colour, strong and durable, but has a rather dull appearance.

Sycamore : This is a beautiful wood when finished, if you can get it to the stage, as it does not take well to seasoning or to changes in climatic conditions. This wood is compact, has a fine grain and can be worked quite easily. It usualy has a light-cream to white colour, but tends to darken with age. Sycamore is commonly used for in the making of violins and general furniture, but beware of warping and shrinkage.

Teak : this straight-grained, heavy, but particularly durable wood has a greasy feel to it that is caused by its high out content. It is suitable for outdoor furniture, deck planks and shipbuilding, although the oiliness makes the use of wood glues a little tricky. Light-brown to burnt-gold in colour, its is a classically beautiful wood to work and gives a lovely finish, but it tends to be hard on blades.

Tulipwood : this beautifully striped, very hard wood, erroneously referred to as poplar, is a light red-brown in colour and finishes well. It is often used for turning and decorative purposes, but is not a common choice for pieces of furniture.

Walnut : is an exquisitely beautiful hardwood with a dark-brown, grey or red colour. This wood is a pleasure to work and a joy to see. Unfortunately, due to high demand, it is becoming quite expensive and is therefore only used for small project, for example in the production of high-quality gun stocks.

meranti

Wood for furniture (1 softwoods)

// November 7th, 2009 // No Comments » // wood

A visit to an well-stocked timberyard is an adventure! First, we will be impressed by the number of different types of wood available, and the variety of lengths and sizes in which it is presented. And then there is the olfactory experience – the variety of aromas exuded form woods is a pleasure in and of itself.

The different woods will be in two major categories: natural wood (direct from the tree) and man-made ‘wood’ (manufactured from by-products of wood from the tree).

Natural wood: This category is devided into two major groups: softwoods and hardwoods. when applied to wood, the terms ’soft’ and ‘hard’ are usually in relation to each other, but there are exeception. Balsa, for example, is physically probably one of the softest woods available commercially, but due to its make-up, it is scientifically classified as a hardwood. Balsa is a light wood, both in weight and in colour, and has very little structural strength. It is not used for furniture making, but mainly in the construction of model aeroplanes and othe such projects. At the other end of the scale are hardwoods, such as teak and ironwood, which are amazingly strong, hard and durable.

Softwoods : are harvested from trees that take about 20-25 years to mature, the most prolific wood in this category comes from the family of trees known collectively as pine. Pine is available almost all over the world and still relatively inexpensive. The trees grow tall and straight, a characterictic which, in year gone by, made them suitable for the masts of sailing vessels as well as large constructions beams. Their long, uninterrupted growth makes pine tress perfect for use in the furniture and building industries.

himalaya

Cedar : generally the colour of liquid  honey, most varieties of cedar are aromatic and have a straight, clearly defined grain. Western red cedar is often used in the construction of houses and joinery, while cedar of Lebanon is a popular choice for cabinet-making as its chemical make-up deters insects. Many varieties in the cedar family are not particularly strong, but they are very durable.

Oregon pine (Oregon cedar, Douglas fir) : is a popular wood used in country-style furniture. it is easy to work, has a pacticularly attractive grain and a lovely brown-yellow colour. This wood giver off a pleasant aroma when being worked.

Pine (all varieties) : is generally a clean white or creamy yellow colour. It is easy to work, is in plentiful supply and is therefore usually inexpensive. Pine can be obtained in a variety of sizes, but good-quality, solid boards are not easy to come by. When selecting pine for furniture making, watch out for knots as they can be a feature or a problem. Knots in timber are  caused by the growth of a branch out of the trunk and if they are ‘dead’ they can fall out of the board(literally), but if they are ‘live’ they can be very attractive feature in the finished product.

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