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Turning of the Week -- September 26,2021
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Impossible to bleach through thick wood. I don't know of anyone that bleaches wood and then continues to work it, it's more of a finish process. I've never measured the depth, but suspect something like .04" to .06" depending on wood density.
@Sid Bright, In order to get bleach or anything else to penetrate any significant distance under vacuum, the wood needs to be bone dry. However, even this won't help much when using wood bleach (a mixture of sodium hydroxide and hydrogen peroxide) because the bleaching process is a chemical reaction in which the bleach is very quickly neutralized as it comes in contact with the extractives in wood. If you are bleaching an open-grained wood the bleach would penetrate slightly deeper than it would in closed-grain wood.