Originally Posted by Gay

I understand that true polyester thread is ok with sewing, ironing, washing and in the clothes dryer. With clear thread, some labled 'poly' are actually nylon. These will break and melt easily,as does rayon thread, and I have heard of 5-10 yr old quilts sewn with these are now falling to pieces. I guess it comes down to reading the labels and making sure we do get 'polyester'.