Each 3/4 inch blade cuts about 45 minutes (I bought 2). Both got a crack while sawing a walnut. I noticed the blade had a "hang" when running my bandsaw, turned it off and noticed a crack almost all the way through, so I put in another blade and the same thing happened about 45 minutes later. UNREAL! Both cracked about 12 inches from the weld. Not once out of more than 20 blades was a blade broken. I will never buy an Olsen blade again, very poorly finished, even the welds are terrible.