Yankee 41 drill question

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Forum topic by Ray posted 09-26-2013 03:16 AM 568 views 0 times favorited 1 reply Add to Favorites Watch
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118 posts in 1424 days

09-26-2013 03:16 AM

A yankee 41 push drill was a freebee with the 605 1/2. I am soaking it in vinegar and am wondering if there was any plating used in the manufacture of this drill. I understand that vinegar can eat some plating surfaces.


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1554 posts in 1460 days

#1 posted 09-26-2013 01:41 PM

it depends on the age. Old ones were nickel plated over copper plating. Newer ones were chromed plated.
WW2 there was a shortage of nickel because they had to make all those little stars for the generals in the Army Air Corps. So during the war they just polished the steel as best they could.

If the nickel is all gone there is usually remains of the copper plating that was flashed on there first to fill in the tiny imperfections.

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