How does a wooden board get to be so smooth and straight? The construction crew or workers at the lumber mill run rough lumber through a grinding machine that chews and whittles protrusions down, so that the board is of perfect thickness. This really makes a lot of noise!! Wear ear plugs!! Do it! Mechanical,
Description: How does a wooden board get to be so smooth and straight? The construction crew or workers at the lumber mill run rough lumber through a grinding machine that chews and whittles protrusions down, so that the board is of perfect thickness. This really makes a lot of noise!! Wear ear plugs!! Do it!
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