you can do ALMOST everything you can do with a regular machine as far as piecing and stitching seams. The serger may be overkill in quilting I think because there is so much thread to quilt over. I'm not proficient at my serger since I don't use it much, and while I'm glad I have it, I don't want to do without my regular machine. I've found it most useful for working with fabrics that fray a lot - one pass on the serger makes the double seam plus overcasts the edges and it would take me two or more passes on a regular machine (i'd probably forget the second straight row of stitching just to save time)