HSS Drill Bit Hardness
Bertie:
Not trying to be curt here, but there is a lot of info here on this
group. Simply search the group via Google, with different word
combinations in your questions and you will have more info than you can
read.
Similarly, a long discussion just wrapped up on heat treating
(annealing and hardening) of HSS on the Woodcentral forum, which is
also searchable.
Robert
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