If you mean soil separator or trench cloth, I just got some a few weeks ago -I had the opportunity to use it yesterday for applique (stitch on the quarter inch line with right sides together, cut a slit in separator cloth and turn right side out). It works ok for the one piece I tried, BUT - it does melt if you use too hot an iron....... Having said that, the circle came out fairly well, and when appliqued to the base fabric, there was very little extra bulk. I just have to remember to cool the iron down next time!