I'm having problems with Y axis stall and I suspect a dull bit as it stalls only during very deep carving. I can feel the bit is much more dull at the carving tip than it is higher up the bit where it doesn't touch anything when carving.
My question is: How long should I expect a bit to last? The bit has 35 hours on it carving 70% poplar wood and 30% Corian lithopanes.