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vintage Abercrombie Fitch knife set in wooden box
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<p>[QUOTE="afantiques, post: 27670, member: 25"]If the wood is oak you are suffering tannic acid attack. It's called nail rot in oak ships with iron nails. Copper and copper based alloys are more resistant but not perfect. Teak can also have a similar effect. Because the corroded copper salts are larger in volume than the original material they ooze out. It's a slow process so a set in use and regularly cleaned should not be a noticeable defect, leave it for years and you get the effect you see. </p><p><br /></p><p>As noted, an overly humid environment will help the process along. If water were not what we were mostly made of it would be classed as a dangerous chemical.[/QUOTE]</p><p><br /></p>
[QUOTE="afantiques, post: 27670, member: 25"]If the wood is oak you are suffering tannic acid attack. It's called nail rot in oak ships with iron nails. Copper and copper based alloys are more resistant but not perfect. Teak can also have a similar effect. Because the corroded copper salts are larger in volume than the original material they ooze out. It's a slow process so a set in use and regularly cleaned should not be a noticeable defect, leave it for years and you get the effect you see. As noted, an overly humid environment will help the process along. If water were not what we were mostly made of it would be classed as a dangerous chemical.[/QUOTE]
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