Bit coming out of the collet

[gmack (Gerald Mackelburg)]

@bikerdan

My interpretation of what is happening is that the old bit got dull enough that as it was trying to slice through this hard maple, it was causing more deflection in the bit than usual.

Dull bits require more power when cutting. At the same cutting speed (SFM or RPM and bit size), that causes an increase in bit torque. It’s likely that torque increase that was causing your problems. You can monitor cutting power increases (hence bit performance) by monitoring spindle power increase - which is easy to do,