Router bit failure

[Robatoy]

Good advice.

[Twayne]

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.

[Father Haskell]

If the finish quality matters at all, always in more than one pass. Single pass in maple guarantees scorching.