The blades are made from the metal as the commercial fabric die cut machines and are guaranteed. Have you ever seen a clothing manufacturing plant? The fabric is spread out in layers, a suction holds the fabric in place and then a big die cut comes down and cuts out the pattern pieces all at once. Hundreds of shirt/dress/pants were cut in minutes. I was in awe! There are only two big commercial die cut manufactures and Accucut is one of the two. They have a long track record of good quality. I have had my GO going on 2 years now and I would buy it again. If I had the room I'd buy the Studio model. My waste fabric is usually skinny strips, you don't cover the whole die board, just the shape.