Especially out of a goddamned cobalt drill bit shank. FFS, I could have sent you some oil-hardening quenching steel which you could have nibbled the hole with your teeth it's that soft - then hardened it and tempered it for a similar end result just a lot less work.
But, just in the effort expended to achieve the result you did - I both express my admiration for your patience and work ethic and my congratulations on you actually succeeding in doing it!
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