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What Happened to This Barrel?


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Hi.

I suppose it could just be the brass plating has been worn off, quite common or someone has been there before and used an inappropriate tool to scrape it clean, also quite common 😉 judging by the pattern left I would go with the latter.

Looks like it's from a manual wind so should be ok after a good clean and lubrication.

Obviously await some replies from the more knowledgeable as I am new so sometimes miss the obvious.

 

 

 

 

 

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Very interesting.  If I were to attempt to create this pattern in a mainspring barrel, I am not sure how I would do it.  Notice that the circles are concentric--do not follow a helical pattern (as I might expect if there were some particle that was working its way radially as the spring wound or unwound).

If you chucked it into a lathe and took a coarse wire brush and applied it once and stopped, maybe you could get that seemingly accurate concentric pattern.

A real mystery.

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