Originally Posted by MadQuilter
I read a horror story on a gal's blog a while ago where she used serger thread for her piecing. Didn't realize that it was Nylon thread and melted it when she pressed the top. All of her piecing had to be redone. Make sure to test yours under the hot iron first.
The serger thread I buy at Jo Ann's the cheap stuff is polyester not nylon. I have never has it melt under normal circumstances. I did have it melt when my Rowents iron when haywire and just kept heating and heating but it also scorced the heck out of my fabric.