New bit, shallower cuts, and time to let the bit cool between passes.
The smaller the bit, the more quickly they overheat. DAMHIKT
Never trouble another for what you can do for yourself.
-- Thomas Jefferson
Well, from what I can see, the overheating ate the bit hardness and hitting
that second knot in the wood at that unreasonably high speed I saw you
using, was the cause. Oh, and since you bottomrf out the bit, you diidn't
get a perfect alignment either; it was wobbling just befors t broke. But
that's all I could see from here.
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