What material is it

What material is it

This topic has 26 replies, 15 voices, and was last updated 18 December 2018 at 20:54 by mark costello 1.

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18 December 2018 at 02:52 #386201
John Reese
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@johnreese12848
JohnF,

Thanks for suggesting an off center point on the drill. It solves the problem of the hole tending to close around the bit.
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18 December 2018 at 20:54 #386355
mark costello 1
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@markcostello1
Could be Beryllium Copper.
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