I've been using these for a couple weeks now on my Delta 40-560 scroll saw & they have been perfect! The cuts are smooth, steady & accurate on the wood types I've used it on (pine, cedar & oak) so far I've used a 12/8 & a 9/6 blade and both worked perfectly. I've only broken one during a blade change but, that was entirely my fault for being rough with it and allowing the blade to bend too far while loosening the allen screw. You can see a couple of the things I've cut out with them, the blades cut very well and are equally happy ripping through a piece quickly to get it to a manageable size as they are when taking your time to get a perfect, precise cut! I was previously using some of the cheap Ryobi pinned blades (the only ones they sell at Home Depot) by knocking the pins out, it worked just fine but after getting these blades and trying them out there's no comparison, the cuts they make are just far and away better! You can't go wrong with these blades!