I really like using the slider; but even with washing the under side, I have managed to sew 3 sliders into quilts. That got expensive. Now, I tape the slider down with painter's tape and am no longer sewing the slider into my quilt. The problem with using tape is I have to remove the tape, etc. to change the bobbin. That is a real pain! I should be able to change the bobbin without removing everything; but I am just not that agile.