Originally Posted by olmphoto2
Make certain that the thread is polyester, not nylon. Sulky makes one and now Madeira (sp?). They are soft, tolerate your iron and (I've been told) will not disintegrate or become brittle after a few years as nylon will---so important with heirloom sewing.
Ditto to olmphoto2's comments! Polyester is soft, where the nylon is more like fishing line. I used it on a quilt that I had trouble deciding a thread color for. It came out nice, but I do prefer regular thread.
I often use Sulky Rayon thread for appliques.