I use my regular machine. But I do.I use a needle for jeans. It is a thicker needle. Just take your time and don't rush the machine. The rag quilt is a really good one to start with.
Have fun
Piecemaker
Or goggle blue jean rag quilts. That is how I make mine. Have 5 to make for Christmas gifts. They are easy to make this way. A little more forgiving than a regular pieced quilt. Have fun making your quilt
Piecemaker