Originally Posted by
SlightlyOffQuilter
I would not use the starch basting on polyester, since it does require using the iron. I did use it on Hobbs 80/20 blend with no issue.
I tried a small test piece spraying the batting, then pressing the top, spray then press the backing. I did turn the heat down a bit to not melt the batting and it did stick, but only very slightly. It stuck enough that I could lay it flat and do some basting. It also greatly compresses the polyester bat which does not refluff after laundering. Like I mentioned, these are charity quilts thus the polyester batting. I am only using cotton bats now for my own, for my family and gift quilts.