Grind them. I use a diamond wheel I bought from Eagle Super abrasives for $180 36 grit 6"X1/2" with a 1/4" of sintered diamond. The wheel has payed for itself in very short order. I think to date I have ground something like 190 teeth and the wheel shows little if any wear. Be mindful of the dust (carbide dust), not silica dust from green wheel, when using a diamond wheel and wear a dust mask.
I started out using a sc252 and sharp teeth were an absolute must and could get many sharpenings out of yellow jackets, and now I am running a sc652 and teeth tend to get destroyed easier and warrant replacement if a rock is struck.
