I have been quilting for 30 plus years and have used sheets off and on when I first started quilting most of our quilting fabric was a blend it was a little harder to do points but it worked we used sheets and tied them no long arms then a lot of people hand quilted plus myself we did not like the sheets for that as the higher thread count was harder to quilt through but it will not nor ever has hurt a machine just change your needle when it needs it and you will be fine I have one ready to quilt now on my DSM and am using a heet TJ Max has some very pretty ones cheaper than buying fabric and I prefer that over muslin it is your quilt have fun