I just finished a large rag quilt with denim on one side and homespun on the other. What a chore. Never again. Nothing lined up, very hard to sew, kept finding gaps in the seams where the fraying had gone past the sewing line and I spent so much time trying to patch the seams. NIGHTMARE. The quilt was for my grandson so fortunately he did not care if the blocks matched up, but I will never use denim again.