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.
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.
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