The blades cut well because the teeth are very hard (65 HRC). However, hardness will lead to tooth loss if you choose the wrong TPI for your application. I was guilty of this for a while and chewed those blades like crazy. Now I'm using 18 dpi, which is better for my typical material thickness. The blades tire. I usually replace them for fatigue cracks and fractures, not tooth wear. You may need to find a band saw welder. Generally good quality from Dewalt. Will keep buying.