I bet you see a lot of that happening at work? All I know is that circular saw tungsten tips don't like nails.
Not too much, but sh
t happens; like a 25mm Tungsten Carbide six-flute endmill colliding with a hardened steel vice at rapid traverse speed!! Bang; snapped like a fresh carrot
150 quid cutter down the pan and a slightly second hand 2000 quid vice!!