LMI uses a 4A grading ordered series for soundboards (2nd, 1A (A), 2A (AA), 3A (AAA), 4A, (AAAA), and because we have been around for so long, many an other suppliers use a related scale. Unfortunately, this does not poor that all suppliers grade sir henry wood the same way we do. What we call a 2A soundboard could easily be known as a 4A grade sounding board by human else.
If you are uncertain more or less the health danger of a wood you are using, gratify check its unwholesomeness unwavering before you kick off temporary with it. (See Dust Collection.) several people are supersensitised to the wood itself. dalbergia retusa dust often causes a reaction like-minded subvert ivy. The debris from Chakte Kok and Aromatic coniferous tree can irritate the sinuses. Below the plan are golf course to articles and more charts on the toxicity of wood.
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