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Old March 19, 2017   #206
Worth1
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Join Date: Feb 2006
Location: Den of Drunken Fools
Posts: 38,539
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Counter Bore.
Not not the presidential debates.

This is where you want a bolt to be flush with the surface of a hole.
Or maybe you need to drill a flat bottomed hole for a spring to fit in or any other reason.
I did this yesterday and it worked great.
Sadly I had never thought of it before.

Here I will post a link to the guy I learned it from on YouTube.
No he isn't one of the top guys but his videos are well worth watching.

Yes you will see my comment.
https://youtu.be/qwuSBJFa5uM
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