{"product_id":"adtrw021-guitar-dreadnaught-top-long-rotation-plantation-californian-redwood-spalted-copy","title":"ADTRW022 Guitar Dreadnaught Top Long Rotation Plantation Californian Redwood","description":"\u003cp\u003e\u003cstrong\u003eCalifornian Redwood Dreadnought Guitar Top Book-matched Set Spalted\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnique, long-rotation plantation Redwood from the Otway Ranges in Victoria. The timber is processed to ensure the grain is as straight as possible to minimise long-grain runout and increase stability, strength and acoustic qualities.\u003c\/p\u003e\n\u003cp\u003eThese top sets have a bright tone similar to cedar, but brighter, and has very good sustain. Growth ring widths are a lot wider than old-growth Californian Redwood yet stiffness to densities are exceptional compared with all types of soundboard material.\u003c\/p\u003e\n\u003cp\u003eFive samples were tested for velocity of sound with a Lucci meter. Densities were also calculated. Average densities were 340kg\/m3 at 11%EMC. Average stiffness to density was 15.99 Gpa\/kg\/m3. These results were tested against samples of Otway Spruce \u003cem\u003ePicea sitchensis\u003c\/em\u003e (Average of 10 samples - 14.37 Gpa\/kg\/m3), Euro Spruce \u003cem\u003ePicea aibes\u003c\/em\u003e (1 sample 14.93 Gpa\/kg\/m3), Lutz Spruce \u003cem\u003ePicea x lutzii \u003c\/em\u003e(1 sample 14.85 Gpa\/kg\/m3), Engelmann Spruce \u003cem\u003ePicea engelmannii\u003c\/em\u003e (1 sample 14.77 Gpa\/kg\/m3), Torrified Northern Hemisphere Sitka (1 sample 14.45 Gpa\/kg\/m3), Adirondack Pruce \u003cem\u003ePicea rubens\u003c\/em\u003e (1 sample 14.40 Gpa\/kg\/m3), Northern Hemisphere Sitka Spruce (best of 2 samples 14.27 Gpa\/kg\/m3), Douglas Fir (Oregon) \u003cem\u003ePseudotsuga menziesii \u003c\/em\u003e(best of 2 samples 14.46 Gpa\/kg\/m3) and Bunya Pine \u003cem\u003eAraucaria bidwillii \u003c\/em\u003e(1 sample 12.27 Gpa\/kg\/m3).\u003c\/p\u003e\n\u003cp\u003eThese results showed that the Otway-grown Californian Redwood has an exceptionally high stiffness to density and appears to have the most resonant timber properties for Australian-grown soundboard material. Many native Australian soundboard materials have higher densities which reduces their r-values. Keep in mind these results were tested on timber with a relatively high moisture content of 11%. It is expected that if testing was done at an emc of 8%, results would show lighter densities and greater velocity of sound readings. It is also expected that as the timber ages it will naturally \"set\" and further increase in stiffness. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTop Set\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eMinimum dimensions:\u003c\/span\u003e 540mm x 220mm x 5.4mm (LxWxT) see outlines on photos for a guide\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eFinish:\u003c\/span\u003e Thin-kerf Bandsaw\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDensity guide (Light, Medium, Dense): \u003c\/strong\u003elight\u003c\/p\u003e\n\u003cp\u003eThis timber has been air dried and seasoned for at least 4 years and has reached an EMC of approximately 8%. EMC on delivery may vary.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBlemishes\/Defects: \u003c\/strong\u003eSap may be avoided on some sets if they are wide enough. Sets may have unique spalting or freckles (epicormic bud spots). See photos for most accurate description. Shape in description is guaranteed. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e It is recommended that the luthier ensure that the timber has reached the appropriate EMC for their environment and application, and is  stabilized to their working conditions before gluing. We give a 100% satisfaction guarantee on all products if it fails to meet the description.\u003c\/p\u003e\n\u003cp\u003eIf at all you have any questions or concerns please contact us.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Otway Tonewoods","offers":[{"title":"Default Title","offer_id":49330754355355,"sku":null,"price":85.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0480\/2114\/3707\/files\/rn-image_picker_lib_temp_46f26232-0423-4d02-9ae8-1db34c106e96.jpg?v=1787199471","url":"https:\/\/www.otwaytonewoods.com.au\/products\/adtrw021-guitar-dreadnaught-top-long-rotation-plantation-californian-redwood-spalted-copy","provider":"Otway Tonewoods ","version":"1.0","type":"link"}