Worlds Oldest pen

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tjd

Member
Joined
Jun 16, 2013
Messages
339
Location
Carmarthenshire , Wales
Here is a chrome & Gunmetal Twist action pen made using Petoskey Stone.
300 million years old.

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I would be interested in exactly what tools you use do drill and turn a stone of that nature.
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I got the stone off ebay for $15
Used drum sander to square an edge, cut using small bandsaw, drilled using cobalt drill bit , placed on pen mandrel and sanded it down to finished size using abranet . No chisels used.
 
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I've got a few smaller Petoskey stones I collected last fall on a long weekend up North. That's a lovely example.
 
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