Sometimes a wood species will have heartwood extractives that will be readily leachable in water and capable of conspicuously tinting a solution of water a specific color. For instance, the heartwood extractives contained in Osage Orange (Maclura pomifera) contain a yellowish-brown dye that is soluble in water. (This can sometimes be observed anecdotally when the wood is glued with a water-based adhesive: the glue’s squeeze-out is an unusually vibrant yellow.) In a simple water extract color test, wood shavings are mixed with water in a vial, test tube, or other suitably small container, and the color of the water is observed after a few minutes. If the heartwood extractives are leachable by water, then a corresponding color change should quickly occur. In addition to Osage Orange (Maclura pomifera), Merbau (Intsia spp.), and Rengas (Gluta spp. and Melanorrhoea spp.) are also noted for their readily leachable heartwood extractives. Because this property is quite uncommon, it can serve to quickly differentiate these woods from other lookalikes.
Fir is most often used for building; however, it is inexpensive and can be used for some furniture-making as well. It does not have the most interesting grain pattern and does not take stain very well, so it is best to use it only when you intend to paint the finished product. Douglas fir is moderately strong and hard for a softwood, rating 4 on a scale of 1 to 4. This wood is worth mentioning because it is very common at your local home center and it is so inexpensive you will probably be tempted to make something with it. Pine comes in several varieties, including Ponderosa, Sugar, White, and Yellow, and all of them make great furniture. In some areas of the country (especially southwest United States), pine is the wood to use.
In today is kitchens dominated by stainless steel and glass, the natural warmth and texture of hardwood provides a welcome contrast. Wood exhibits defining characteristics such as mineral deposits and knots that contribute to its beauty, and can be highlighted by stains and glazes. Your look can even change over time, with changes occurring as wood ages and is exposed to light. Humidity also has a significant impact on woods, with dimensional changes lasting several days or weeks. To avoid permanent or damaging changes, maintain the humidity levels at or above 20% when the temperature is below 20 degrees and over 35% when the temperature is above 20 degrees.
Pine is very easy to work with and, because most varieties are relatively soft, it lends itself to carving. Assuming it is a real wood veneer with a distinct grain and texture—and not merely a piece of printed plastic—you may still be able to identify the outer veneer wood in question, but you should still realize that is it only a veneer and not a solid piece of wood. Is it painted or printed to look like wood? Many times, especially on medium to large-sized flat panels for furniture, a piece of particleboard or MDF is either laminated with a piece of wood-colored plastic, or simply painted to look like wood grain. Many of today’s interior hardwood flooring planks are good examples of these pseudo-wood products: they are essentially a man-made material made of sawdust, glues, resins, and durable plastics.
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