Originally Posted by PiecesinMn
I like to use muslin. Especially nice if you want the look with your 30's fabric of a 30's style quilt. You do need to be sure your are buying good quality muslin. Using muslin on your back is a terrific way to have your quilting shown off, so quilt good!!!
I love muslin; have used in 30s quilts and also in small (6"square) 9-patches.
Bleached or unbleached - I agree with the above - buy top quality - there's one called Quilter's Muslin that's good.
Would not use as my back unless someone else was doing the quilting - mine is definitely not good enough to show off.