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Treasure Hunting
Member Finds
Wiley's coin and relic by-products from 40 years of gold prospecting.
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<blockquote data-quote="Deepseeker" data-source="post: 626715" data-attributes="member: 13321"><p>It may be a knurl rather than a thread. Maybe the square shoulder prevents rotation when pressed into a round hole that the corners bite into, and the knurled end prevents pulling/falling out once the glue or resin has set in the bottom of the hole.</p></blockquote><p></p>
[QUOTE="Deepseeker, post: 626715, member: 13321"] It may be a knurl rather than a thread. Maybe the square shoulder prevents rotation when pressed into a round hole that the corners bite into, and the knurled end prevents pulling/falling out once the glue or resin has set in the bottom of the hole. [/QUOTE]
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Treasure Hunting
Member Finds
Wiley's coin and relic by-products from 40 years of gold prospecting.
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