Unless you are making a quilt using only one pattern, you probably would not want to cut your fabric. I always check my fabric for bleeding. If it bleeds, I will treat it with a product available online. If you don't treat the fabric, you could ruin the entire quilt -- I always prewash my fabrics because I am asthmatic and the chemicals can really precipitate an asthma attack nad asthma attacks can kill. Also, if my fabric is going to shrink, I'd prefer that it shrink BEFORE I cut the pieces for my quilt. Not all quilt patterns/blocks require the same size/shape pieces. I'm an absolute rank amateur when it comes to quilting, even though I've been sewing making garments all my life. But, quilting is different as compared to garment construction.