A fine grit wheel for your bench grinder (if you have s bench grinder already)..... One zzzzzzip, flip it, zzzzzip and that baby will slice through my finger again... AW MAN! time for another band-aid

If you don't have the bench grinder, while it would be a worthy addition to any shop, it'd take a lot of blades to justify the purchase. Although you can sharpen em'..... probably 20 times.