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Mystery metal ?

catongw

Well-known member
Joined
Feb 19, 2023
Messages
58
What are these ? I had the big one for several months and a week or so ago a friend gave me another. They are not magnetic. But have a metallic ping to them when tapped together or on my vise .
 

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PCustoms

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Jul 23, 2011
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23,030
Location
VT
Maybe sharpening stones worn down to nothing?

That's pretty much exactly what I was thinking...reminds me of the OD grinder stones when they were worn to nothing. Would still ring, hard and dark brown.
 
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catongw

Well-known member
Joined
Feb 19, 2023
Messages
58
Try filing a flat on the corner of one of the edges. What does he bare material look like? Also try scratching it with other items to get an idea of its hardness. Many, many metals are non-magnetic, so that's just one factor.
I'll do this when I go back down to shop tomorrow. Thanks .
 
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catongw

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Joined
Feb 19, 2023
Messages
58
Definately silver. Check if your friend has more.
Wouldn't that be nice . But I've made silver bars from back in the day of b&w films. And didn't look like that and was definitely heavier than these..
 

neophyte

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Joined
Apr 23, 2012
Messages
9,703
Location
Pennsylvannia
Beryllium Copper ?
Are they wedges ?
Beryllium Copper alloys sometimes have that color.
The beryllium content in the copper makes the alloy hard enough to cut mild steel.
BeCu is usually used for tools and certain other object for environments were sparks could create explosive issues.
 
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catongw

Well-known member
Joined
Feb 19, 2023
Messages
58
Beryllium Copper ?
Are they wedges ?
Beryllium Copper alloys sometimes have that color.
The beryllium content in the copper makes the alloy hard enough to cut mild steel.
BeCu is usually used for tools and certain other object for environments were sparks could create explosive issues.
I cleaned them up and they are grey and look very much like a regular whetstone . So so far I'm thinking sickle/ schythe stone .
 
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